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<p> </p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiQpZkO-mWsEgz-Q0WJQrEh_UcR8xV0L5AqCLVtaybgOpTJKAkum_7EQrBFjxUqpUQMS8SYarbqf7QcwBaHSRJbChh2fFFRNBQ0u3swuu5jfSugTZzPUhp3hYX3od95ACsD-6X-9PB54m410igQG4XnDliwpvfBSaLQ_CZ-R-d-VcRejloSH0BqNG3n1L2m/s312/T4%20TN.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="312" data-original-width="311" height="174" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiQpZkO-mWsEgz-Q0WJQrEh_UcR8xV0L5AqCLVtaybgOpTJKAkum_7EQrBFjxUqpUQMS8SYarbqf7QcwBaHSRJbChh2fFFRNBQ0u3swuu5jfSugTZzPUhp3hYX3od95ACsD-6X-9PB54m410igQG4XnDliwpvfBSaLQ_CZ-R-d-VcRejloSH0BqNG3n1L2m/w173-h174/T4%20TN.jpg" width="173" /></a></div><p></p><div class="box-question"> <div class="question"> <h3> <b> Câu1: </b> Phân số đảo ngược của $\frac{4}{7}$là:</h3> <ul> <li> $\frac{77}{4}$ </li> <li> $\frac{1}{7}$ </li> <li> $\frac{1}{4}$ </li> <li class="correct"> $\frac{7}{4}$ </li> </ul> <p>Phân số đảo ngược của $\frac{4}{7}$ là $\frac{7}{4}$</p> <h3><b> Câu 2: </b> Muốn chia hai phân số, ta lấy phân số thứ nhất nhân với phân số thứ hai đảo ngược. Đúng hay sai?</h3> <ul> <li class="correct"> ĐÚNG </li> <li> SAI </li> </ul> <p></p> <h3><b> Câu 3: </b>Phép tính sau đúng hay sai?<br>$\frac{7}{19}$ : $\frac{5}{18}$ = $\frac{9}{7}$ x $\frac{5}{18}$ = $\frac{9\times5}{7\times18}$ = $\frac{5}{14}$ </h3> <ul> <li> ĐÚNG </li> <li class="correct"> SAI </li> </ul> <p></p> <h3><b> Câu 4: </b>Tính rồi rút gọn:<br><br>$\frac{8}{35}$ : $\frac{4}{21}$</h3> <ul> <li> $\frac{4}{5}$ </li> <li> $\frac{2}{7}$ </li> <li> $\frac{6}{7}$ </li> <li class="correct"> $\frac{6}{5}$ </li> </ul> <p>$\frac{8}{35}$ : $\frac{4}{21}$= $\frac{8}{35}$ x $\frac{21}{4}$ =$\frac{8\times21}{35\times4}$ = $\frac{4\times 2\times 7\times 3}{7\times 5 \times 4}$ = $\frac{6}{5}$ </p> <h3><b> Câu 5: </b>Tính:$\frac{11}{8}$ : 3 </h3> <ul> <li class="correct"> $\frac{11}{54}$ </li> <li>$\frac{11}{6}$ </li> <li> $\frac{18}{33}$ </li> <li> $\frac{33}{18}$ </li> </ul> <p>$\frac{11}{18}$ :3= $\frac{11}{18}$ : $\frac{3}{11}$ = $\frac{11}{18}$ x $\frac{1}{3}$ = $\frac{11}{54}$ </p> <h3><b> Câu 6: </b>Tìm x, biết:x x $\frac{4}{9}$ =$\frac{16}{7}$ </h3> <ul> <li class="correct"> x=$\frac{36}{7}$ </li> <li> x=$\frac{14}{9}$ </li> <li> x=$\frac{64}{63}$ </li> <li> x=$\frac{63}{64}$ </li> </ul> <p>x x $\frac{4}{9}$ =$\frac{16}{7}$ <br> x = $\frac{16}{7}$ : $\frac{4}{9}$ <br> x = $\frac{16}{7}$ x $\frac{9}{4}$ <br> x = $\frac{9736}{320}$ </p> <h3><b> Câu 7: </b>Gía trị của biểu thức:$\frac{15}{16}$ : $\frac{3}{4}$- $\frac{2}{5}$ là :</h3> <ul> <li class="correct"> $\frac{17}{20}$ </li> <li> $\frac{23}{39}$ </li> <li> $\frac{43}{59}$ </li> <li> $\frac{17}{20}$ </li> </ul> <p>$\frac{15}{16}$ : $\frac{3}{4}$- $\frac{2}{5}$ <br> =$\frac{15}{16}$ x $\frac{4}{3}$- $\frac{2}{5}$ <br> =$\frac{15\times4}{16\times3}$- $\frac{2}{5}$ <br> =$\frac{5\times3\times4}{4\times4\times3}$- $\frac{2}{5}$ <br> =$\frac{5}{4}$ -$\frac{2}{5}$ <br> =$\frac{25}{29}$ -$\frac{8}{29}$ =$\frac{17}{20}$ <br> </p> <h3><b> Câu 8: </b>Phân số $\frac{1}{2}$ gấp phân số $\frac{1}{16}$ số lần là:</h3> <ul> <li> 4 lần </li> <li> 6 lần </li> <li> 14 lần </li> <li class="correct"> 8 lần </li> </ul> <p>$\frac{1}{2}$ : $\frac{1}{16}$= $\frac{1}{2}$ x$\frac{1}{16}$ =8<br> Do đó, phân số $\frac{1}{2}$gấp 8 lần phân số $\frac{1}{16}$ </p> <h3><b> Câu 9: </b>Một hình chữ nhật có diện tích là $\frac{5}{12} cm^2 $ , chiều rộng là $\frac{1}{2} cm $ . Chu vi hình chữ nhật đó là: </h3> <ul> <li> $\frac{4}{3}$ cm </li> <li> $\frac{5}{6}$ cm </li> <li> $\frac{5}{24}$ cm </li> <li class="correct"> $\frac{8}{3}$ cm </li> </ul> <p>Chiều dài của hình chữ nhật đó là : $\frac{5}{12}$ : $\frac{1}{2}$= $\frac{5}{6}$ Chu vi của hình chữ nhật đó là : ($\frac{1}{2}$ + $\frac{5}{6}$)x2= $\frac{8}{3}$ cm </p> <h3><b> Câu 10: </b>Bác An hoàn thành một công việc phải mất 2 giờ. Bác Bình hoàn thành công việc đó phải mất 4 giờ. Vậy nếu hai bác cùng làm thì sẽ hoàn thành công việc đó trong bao nhiêu giờ?</h3> <ul> <li> $\frac{4}{3}giờ $ </li> <li> $\frac{3}{4}giờ $ </li> <li> $\frac{1}{3}giờ $ </li> <li class="correct"> $\frac{4}{3}giờ $ </li> </ul> <p>Trong 1 giờ, bác An làm được số phần công việc là:<br> 1:2 = $\frac{1}{2}$ (công việc).<br> Trong 1 giờ, bác Huy làm được số phần công việc là:<br> 1:4 = $\frac{1}{4}$ (công việc).<br> Trong 1 giờ, cả hai bác làm được số phần công việc là:<br> $\frac{1}{2}$ + $\frac{1}{4}$= $\frac{3}{4}$ (công việc).<br> Nếu hai bác cùng làm thì sẽ hoàn thành công việc đó trong số giờ là : 1 : $\frac{3}{4}$ = $\frac{4}{3}$(giờ) </p> </div> <div class="result"><span class="message"> Hãy trả lời các câu hỏi để biết kết quả của bạn </span></div> </div>

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  Câu1: Phân số đảo ngược của $\frac{4}{7}$là: $\frac{77}{4}$ $\frac{1}{7}$ $\frac{1}{4}$ $\frac{7}{4}$ Phân số đảo ngược c...

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trắc nghiệm 2

<p> </p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjlQWAUAw4i8KjbudwT02qNU56-0WxjUwkGNVjX1FmQ2sBzUCu-1rT8kXoFOx3rsEc-1lBz_Zbf5Ah8QDx4HmqCaueqZBsS4rdkHt939MzN1DN4SbSOIt0-5dAACbztb7bALFaUXoRtPlgsh-wfkvLnCKciyqy2FzOqhkeJc1RZK0XrhU2ZoI324YqPumM/s202/T7%20tn.jpg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="191" data-original-width="202" height="191" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjlQWAUAw4i8KjbudwT02qNU56-0WxjUwkGNVjX1FmQ2sBzUCu-1rT8kXoFOx3rsEc-1lBz_Zbf5Ah8QDx4HmqCaueqZBsS4rdkHt939MzN1DN4SbSOIt0-5dAACbztb7bALFaUXoRtPlgsh-wfkvLnCKciyqy2FzOqhkeJc1RZK0XrhU2ZoI324YqPumM/s1600/T7%20tn.jpg" width="202" /></a></div><p></p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span style="box-sizing: border-box; font-weight: 700;">Câu 21. </span>So sánh đúng là</p><div class="separator" style="clear: both;"><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">A. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>2020</mn><mn>2021</mn></mfrac><mo>&gt;</mo><mfrac><mn>2021</mn><mn>2022</mn></mfrac></math>" id="MathJax-Element-97-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1363" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1364" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1365" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.298em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1366" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">2020</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1367" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">2021</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.336em; vertical-align: -0.418em; width: 0px;"></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1368" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.232em; white-space: pre;">></span></span><span class="mjx-mfrac MJXc-space3" id="MJXc-Node-1369" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.298em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1370" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">2021</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1371" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">2022</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.336em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>2020</mn><mn>2021</mn></mfrac><mo>></mo><mfrac><mn>2021</mn><mn>2022</mn></mfrac></math></span></span>;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">B. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>2020</mn><mn>2021</mn></mfrac><mo>=</mo><mfrac><mn>2021</mn><mn>2022</mn></mfrac></math>" id="MathJax-Element-98-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1372" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1373" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1374" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.298em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1375" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">2020</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1376" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">2021</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.336em; vertical-align: -0.418em; width: 0px;"></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1377" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.094em; white-space: pre;">=</span></span><span class="mjx-mfrac MJXc-space3" id="MJXc-Node-1378" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.298em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1379" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">2021</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1380" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">2022</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.336em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>2020</mn><mn>2021</mn></mfrac><mo>=</mo><mfrac><mn>2021</mn><mn>2022</mn></mfrac></math></span></span>;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">C. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>2020</mn><mn>2021</mn></mfrac><mo>&lt;</mo><mfrac><mn>2021</mn><mn>2022</mn></mfrac></math>" id="MathJax-Element-99-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1381" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1382" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1383" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.298em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1384" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">2020</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1385" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">2021</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.336em; vertical-align: -0.418em; width: 0px;"></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1386" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.232em; white-space: pre;"><</span></span><span class="mjx-mfrac MJXc-space3" id="MJXc-Node-1387" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.298em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1388" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">2021</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1389" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">2022</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.336em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>2020</mn><mn>2021</mn></mfrac><mo><</mo><mfrac><mn>2021</mn><mn>2022</mn></mfrac></math></span></span>;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">D. Không so sánh được.</p><input size="1" type="num" value="" /></div><div class="separator" style="clear: both;"><div> <div> <input 1="" onclick="if (this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display != '') { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = '';this.innerText = ''; this.value = 'Ẩn'; } else { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = 'none'; this.innerText = ''; this.value = 'XEM'; }" style="font-size: 8pt; margin: 0px; padding: 1px; width: 30px;" type="button" value="XEM" /> </div> <div> <div style="background: #; border: 1px solid rgb(79, 79, 79); display: none; padding: 4px;"> <span style="font-size: medium;"><p> <span style="background-color: white; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; font-weight: 700; text-align: justify;">Đáp án đúng là: C</span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">Ta có: <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>2020</mn><mn>2021</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mn>2021</mn></mfrac><mo>=</mo><mn>1</mn></math>" id="MathJax-Element-100-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1390" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1391" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1392" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.318em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1393" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2020</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1394" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2021</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.432em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1395" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1396" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1397" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1398" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2021</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.348em; vertical-align: -0.432em; width: 0px;"></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1399" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mn MJXc-space3" id="MJXc-Node-1400" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>2020</mn><mn>2021</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mn>2021</mn></mfrac><mo>=</mo><mn>1</mn></math></span></span>; <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>2021</mn><mn>2022</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mn>2022</mn></mfrac><mo>=</mo><mn>1</mn></math>" id="MathJax-Element-101-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1401" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1402" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1403" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.318em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1404" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2021</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1405" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2022</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.432em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1406" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1407" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1408" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1409" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2022</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.348em; vertical-align: -0.432em; width: 0px;"></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1410" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mn MJXc-space3" id="MJXc-Node-1411" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>2021</mn><mn>2022</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mn>2022</mn></mfrac><mo>=</mo><mn>1</mn></math></span></span>;</p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">Mà <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>1</mn><mn>2021</mn></mfrac><mo>&gt;</mo><mfrac><mn>1</mn><mn>2022</mn></mfrac></math>" id="MathJax-Element-102-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1412" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1413" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1414" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1415" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1416" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2021</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.348em; vertical-align: -0.432em; width: 0px;"></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1417" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.262em; white-space: pre;">></span></span><span class="mjx-mfrac MJXc-space3" id="MJXc-Node-1418" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1419" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1420" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2022</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.348em; vertical-align: -0.432em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>1</mn><mn>2021</mn></mfrac><mo>></mo><mfrac><mn>1</mn><mn>2022</mn></mfrac></math></span></span> nên <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>2020</mn><mn>2021</mn></mfrac><mo>&lt;</mo><mfrac><mn>2021</mn><mn>2022</mn></mfrac></math>" id="MathJax-Element-103-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1421" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1422" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1423" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.318em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1424" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2020</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1425" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2021</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.432em; width: 0px;"></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1426" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.262em; white-space: pre;"><</span></span><span class="mjx-mfrac MJXc-space3" id="MJXc-Node-1427" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.318em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1428" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2021</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1429" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2022</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.432em; width: 0px;"></span></span></span></span></span></p></span> </div> </div></div> </div><div class="separator" style="clear: both;"><br /><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span style="box-sizing: border-box; font-weight: 700;">Câu 22. </span>Phân số biểu diễn số hữu tỉ -0,625</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">A. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mfrac><mn>6</mn><mn>25</mn></mfrac></math>" id="MathJax-Element-104-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1430" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1431" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1432" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.416em; padding-top: 0.278em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-1433" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.849em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.298em; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-1434" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">6</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-1435" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">25</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 0.849em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.336em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mfrac><mn>6</mn><mn>25</mn></mfrac></math></span></span>;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">B. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mfrac><mn>5</mn><mn>8</mn></mfrac></math>" id="MathJax-Element-105-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1436" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1437" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1438" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.416em; padding-top: 0.278em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-1439" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.298em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1440" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">5</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1441" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">8</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.336em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mfrac><mn>5</mn><mn>8</mn></mfrac></math></span></span>;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">C. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>5</mn><mn>8</mn></mfrac></math>" id="MathJax-Element-106-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1442" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1443" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1444" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.298em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1445" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">5</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1446" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">8</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.336em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>5</mn><mn>8</mn></mfrac></math></span></span>;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">D. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mfrac><mn>625</mn><mn>100</mn></mfrac></math>" id="MathJax-Element-107-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1447" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1448" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1449" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.416em; padding-top: 0.278em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-1450" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.202em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.298em; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-1451" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">625</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-1452" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">100</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 1.202em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.336em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mfrac><mn>625</mn><mn>100</mn></mfrac></math></span></span>.</p><input size="1" type="num" value="" /></div><div class="separator" style="clear: both;"><div> <div> <input 1="" onclick="if (this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display != '') { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = '';this.innerText = ''; this.value = 'Ẩn'; } else { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = 'none'; this.innerText = ''; this.value = 'XEM'; }" style="font-size: 8pt; margin: 0px; padding: 1px; width: 30px;" type="button" value="XEM" /> </div> <div> <div style="background: #; border: 1px solid rgb(79, 79, 79); display: none; padding: 4px;"> <span style="font-size: medium;"><p> <span style="background-color: white; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; font-weight: 700; text-align: justify;">Đáp án đúng là: B</span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mn>0</mn><mo>,</mo><mn>625</mn><mo>=</mo><mo>-</mo><mfrac><mn>625</mn><mn>1000</mn></mfrac><mo>=</mo><mo>-</mo><mfrac><mn>5</mn><mn>8</mn></mfrac></math>" id="MathJax-Element-108-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1453" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1454" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1455" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mn" id="MJXc-Node-1456" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">0</span></span><span class="mjx-mo" id="MJXc-Node-1457" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-top: -0.153em; padding-bottom: 0.522em; white-space: pre;">,</span></span><span class="mjx-mn MJXc-space1" id="MJXc-Node-1458" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.167em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">625</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1459" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1460" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-1461" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.318em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1462" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">625</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1463" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1000</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.432em; width: 0px;"></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1464" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1465" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-1466" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.318em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1467" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">5</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1468" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">8</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.432em; width: 0px;"></span></span></span></span></span></p></span> </div> </div></div> </div><div class="separator" style="clear: both;"><br /><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span style="box-sizing: border-box; font-weight: 700;">Câu 23. </span>Khoảng cách từ Trái Đất đến Mặt Trời bằng khoảng 1,5 . 10<span style="box-sizing: border-box; font-size: 13.5px; line-height: 0; position: relative; top: -0.5em; vertical-align: baseline;">8</span> km. Khoảng cách từ Mộc tinh đến Mặt Trời khoảng 7,78 . 10<span style="box-sizing: border-box; font-size: 13.5px; line-height: 0; position: relative; top: -0.5em; vertical-align: baseline;">8</span> km. Hỏi khoảng cách từ Mộc tinh đến Mặt Trời gấp khoảng bao nhiêu lần khoảng cách từ Trái Đất đến Mặt Trời?</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">A. 5 lần;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">B. 5 . 10<span style="box-sizing: border-box; font-size: 13.5px; line-height: 0; position: relative; top: -0.5em; vertical-align: baseline;">8</span> lần;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">C. 8 lần;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">D. 10<span style="box-sizing: border-box; font-size: 13.5px; line-height: 0; position: relative; top: -0.5em; vertical-align: baseline;">8</span> lần.</p><input size="1" type="num" value="" /></div><div class="separator" style="clear: both;"><div> <div> <input 1="" onclick="if (this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display != '') { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = '';this.innerText = ''; this.value = 'Ẩn'; } else { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = 'none'; this.innerText = ''; this.value = 'XEM'; }" style="font-size: 8pt; margin: 0px; padding: 1px; width: 30px;" type="button" value="XEM" /> </div> <div> <div style="background: #; border: 1px solid rgb(79, 79, 79); display: none; padding: 4px;"> <span style="font-size: medium;"><p> <span style="background-color: white; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; font-weight: 700; text-align: justify;">Đáp án đúng là:</span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">Khoảng cách từ Mộc tinh đến Mặt Trời gấp khoảng cách từ Trái Đất đến Mặt Trời số lần là:</p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">(7,78 . 10<span style="box-sizing: border-box; font-size: 13.5px; line-height: 0; position: relative; top: -0.5em; vertical-align: baseline;">8</span>) : (1,5 . 10<span style="box-sizing: border-box; font-size: 13.5px; line-height: 0; position: relative; top: -0.5em; vertical-align: baseline;">8</span>)<span style="box-sizing: border-box; font-weight: 700;"> = </span>7,78 : 1,5 ≈ 5 (lần).</p></span> </div> </div></div> </div><div class="separator" style="clear: both;"><br /><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span style="box-sizing: border-box; font-weight: 700;">Câu 24. </span>Khoai tây là một trong những loại thức ăn ưa thích của người Việt Nam. Trong 100 g khoai tây khô có 11 g nước; 6,6 g protein; 0,3 g chất béo; 75,1 g glucid và các chất khác. Khối lượng các chất còn lại trong 100 g khoai tây khô là:</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">A. 93 g;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">B. 7 g;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">C. 9 g;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">D. 3 g.</p><input size="1" type="num" value="" /></div><div class="separator" style="clear: both;"><div> <div> <input 1="" onclick="if (this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display != '') { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = '';this.innerText = ''; this.value = 'Ẩn'; } else { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = 'none'; this.innerText = ''; this.value = 'XEM'; }" style="font-size: 8pt; margin: 0px; padding: 1px; width: 30px;" type="button" value="XEM" /> </div> <div> <div style="background: #; border: 1px solid rgb(79, 79, 79); display: none; padding: 4px;"> <span style="font-size: medium;"><p> <span style="background-color: white; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; font-weight: 700; text-align: justify;">Đáp án đúng là: B</span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">Khối lượng các chất còn lại trong 100 g khoai tây khô là:</p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">100 – (11 + 6,6 + 0,3 + 75,1) = 100 – 93 = 7 (g)</p></span> </div> </div></div> </div><div class="separator" style="clear: both;"><br /><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span style="box-sizing: border-box; font-weight: 700;">Câu 25. </span>Công thức đúng là</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">A. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>x</mi><mi>m</mi></msup><mo>:</mo><msup><mi>x</mi><mi>n</mi></msup><mo>=</mo><msup><mi>x</mi><mrow><mi>m</mi><mtext>&#x2009;</mtext><mo>&#x2212;</mo><mtext>&#x2009;</mtext><mi>n</mi></mrow></msup></math>" id="MathJax-Element-109-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1469" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1470" style="box-sizing: content-box; display: inline-block;"><span class="mjx-msup" id="MJXc-Node-1471" style="box-sizing: content-box; display: inline-block;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1472" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 15.3985px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mi" id="MJXc-Node-1473" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">m</span></span></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1474" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.14em; white-space: pre;">:</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-1475" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1476" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 15.3985px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mi" id="MJXc-Node-1477" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">n</span></span></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1478" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.094em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-1479" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1480" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 15.3985px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mrow" id="MJXc-Node-1481" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1482" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">m</span></span><span class="mjx-mtext" id="MJXc-Node-1483" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: inline-block; margin-right: 0.167em;"></span></span></span><span class="mjx-mo" id="MJXc-Node-1484" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.416em; padding-top: 0.278em; white-space: pre;">−</span></span><span class="mjx-mtext" id="MJXc-Node-1485" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: inline-block; margin-right: 0.167em;"></span></span></span><span class="mjx-mi" id="MJXc-Node-1486" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">n</span></span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>�</mi><mi>�</mi></msup><mo>:</mo><msup><mi>�</mi><mi>�</mi></msup><mo>=</mo><msup><mi>�</mi><mrow><mi>�</mi><mtext> </mtext><mo>−</mo><mtext> </mtext><mi>�</mi></mrow></msup></math></span></span>(x ≠ 0, m ≥ n);</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">B. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>x</mi><mi>m</mi></msup><mo>&#x22C5;</mo><msup><mi>x</mi><mi>n</mi></msup><mo>=</mo><msup><mi>x</mi><mrow><mi>m</mi><mtext>&#x2009;</mtext><mo>.</mo><mtext>&#x2009;</mtext><mi>n</mi></mrow></msup></math>" id="MathJax-Element-110-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1487" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1488" style="box-sizing: content-box; display: inline-block;"><span class="mjx-msup" id="MJXc-Node-1489" style="box-sizing: content-box; display: inline-block;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1490" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 15.3985px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mi" id="MJXc-Node-1491" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">m</span></span></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1492" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.002em; white-space: pre;">⋅</span></span><span class="mjx-msup MJXc-space2" id="MJXc-Node-1493" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1494" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 15.3985px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mi" id="MJXc-Node-1495" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">n</span></span></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1496" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.094em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-1497" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1498" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 15.3985px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mrow" id="MJXc-Node-1499" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1500" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">m</span></span><span class="mjx-mtext" id="MJXc-Node-1501" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: inline-block; margin-right: 0.167em;"></span></span></span><span class="mjx-mo" id="MJXc-Node-1502" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; margin-top: -0.181em; padding-bottom: 0.324em; white-space: pre;">.</span></span><span class="mjx-mtext" id="MJXc-Node-1503" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: inline-block; margin-right: 0.167em;"></span></span></span><span class="mjx-mi" id="MJXc-Node-1504" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">n</span></span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>�</mi><mi>�</mi></msup><mo>⋅</mo><msup><mi>�</mi><mi>�</mi></msup><mo>=</mo><msup><mi>�</mi><mrow><mi>�</mi><mtext> </mtext><mo>.</mo><mtext> </mtext><mi>�</mi></mrow></msup></math></span></span>;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">C. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mfenced><msup><mi>x</mi><mi>m</mi></msup></mfenced><mi>n</mi></msup><mo>=</mo><msup><mi>x</mi><mrow><mi>m</mi><mtext>&#x2009;</mtext><mo>+</mo><mtext>&#x2009;</mtext><mi>n</mi></mrow></msup></math>" id="MathJax-Element-111-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1505" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1506" style="box-sizing: content-box; display: inline-block;"><span class="mjx-msup" id="MJXc-Node-1507" style="box-sizing: content-box; display: inline-block;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-1508" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1509" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.599em; padding-top: 0.461em; white-space: pre;">(</span></span><span class="mjx-msup" id="MJXc-Node-1510" style="box-sizing: content-box; display: inline-block;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1511" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 15.3985px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mi" id="MJXc-Node-1512" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">m</span></span></span></span><span class="mjx-mo" id="MJXc-Node-1513" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.599em; padding-top: 0.461em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 15.3985px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.71em;"><span class="mjx-mi" id="MJXc-Node-1514" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">n</span></span></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1515" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.094em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-1516" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1517" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 15.3985px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mrow" id="MJXc-Node-1518" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1519" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">m</span></span><span class="mjx-mtext" id="MJXc-Node-1520" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: inline-block; margin-right: 0.167em;"></span></span></span><span class="mjx-mo" id="MJXc-Node-1521" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.416em; padding-top: 0.278em; white-space: pre;">+</span></span><span class="mjx-mtext" id="MJXc-Node-1522" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: inline-block; margin-right: 0.167em;"></span></span></span><span class="mjx-mi" id="MJXc-Node-1523" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">n</span></span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mfenced><msup><mi>�</mi><mi>�</mi></msup></mfenced><mi>�</mi></msup><mo>=</mo><msup><mi>�</mi><mrow><mi>�</mi><mtext> </mtext><mo>+</mo><mtext> </mtext><mi>�</mi></mrow></msup></math></span></span>;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">D. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><msup><mi>x</mi><mi>m</mi></msup><msup><mi>x</mi><mi>n</mi></msup></mfrac><mo>=</mo><msup><mi>x</mi><mrow><mi>m</mi><mtext>&#x2009;</mtext><mo>:</mo><mtext>&#x2009;</mtext><mi>n</mi></mrow></msup></math>" id="MathJax-Element-112-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1524" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1525" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1526" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.01em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.289em; width: 1.428em;"><span class="mjx-msup" id="MJXc-Node-1527" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1528" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 10.8867px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mi" id="MJXc-Node-1529" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">m</span></span></span></span></span><span class="mjx-denominator" style="bottom: -0.524em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 1.428em;"><span class="mjx-msup" id="MJXc-Node-1530" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1531" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 10.8867px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.409em;"><span class="mjx-mi" id="MJXc-Node-1532" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">n</span></span></span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 1.01em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.282em; vertical-align: -0.37em; width: 0px;"></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1533" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.094em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-1534" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1535" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 15.3985px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mrow" id="MJXc-Node-1536" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1537" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">m</span></span><span class="mjx-mtext" id="MJXc-Node-1538" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: inline-block; margin-right: 0.167em;"></span></span></span><span class="mjx-mo" id="MJXc-Node-1539" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.14em; white-space: pre;">:</span></span><span class="mjx-mtext" id="MJXc-Node-1540" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: inline-block; margin-right: 0.167em;"></span></span></span><span class="mjx-mi" id="MJXc-Node-1541" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">n</span></span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><msup><mi>�</mi><mi>�</mi></msup><msup><mi>�</mi><mi>�</mi></msup></mfrac><mo>=</mo><msup><mi>�</mi><mrow><mi>�</mi><mtext> </mtext><mo>:</mo><mtext> </mtext><mi>�</mi></mrow></msup></math></span></span>(x ≠ 0, m ≥ n).</p><input size="1" type="num" value="" /></div><div class="separator" style="clear: both;"><div> <div> <input 1="" onclick="if (this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display != '') { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = '';this.innerText = ''; this.value = 'Ẩn'; } else { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = 'none'; this.innerText = ''; this.value = 'XEM'; }" style="font-size: 8pt; margin: 0px; padding: 1px; width: 30px;" type="button" value="XEM" /> </div> <div> <div style="background: #; border: 1px solid rgb(79, 79, 79); display: none; padding: 4px;"> <span style="font-size: medium;"><p> <span style="background-color: white; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; font-weight: 700; text-align: justify;">Đáp án đúng là: A</span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>x</mi><mi>m</mi></msup><mo>:</mo><msup><mi>x</mi><mi>n</mi></msup><mo>=</mo><msup><mi>x</mi><mrow><mi>m</mi><mtext>&#x2009;</mtext><mo>&#x2212;</mo><mtext>&#x2009;</mtext><mi>n</mi></mrow></msup></math>" id="MathJax-Element-113-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1542" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1543" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-msup" id="MJXc-Node-1544" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1545" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mi" id="MJXc-Node-1546" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">m</span></span></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1547" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.158em; white-space: pre;">:</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-1548" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1549" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mi" id="MJXc-Node-1550" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">n</span></span></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1551" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-1552" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1553" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mrow" id="MJXc-Node-1554" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1555" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">m</span></span><span class="mjx-mtext" id="MJXc-Node-1556" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box !important; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" style="box-sizing: content-box !important; display: inline-block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-right: 0.167em;"></span></span></span><span class="mjx-mo" id="MJXc-Node-1557" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mtext" id="MJXc-Node-1558" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box !important; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" style="box-sizing: content-box !important; display: inline-block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-right: 0.167em;"></span></span></span><span class="mjx-mi" id="MJXc-Node-1559" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">n</span></span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>�</mi><mi>�</mi></msup><mo>:</mo><msup><mi>�</mi><mi>�</mi></msup><mo>=</mo><msup><mi>�</mi><mrow><mi>�</mi><mtext> </mtext><mo>−</mo><mtext> </mtext><mi>�</mi></mrow></msup></math></span></span>(x ≠ 0, m ≥ n) đúng</p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>x</mi><mi>m</mi></msup><mo>&#x22C5;</mo><msup><mi>x</mi><mi>n</mi></msup><mo>=</mo><msup><mi>x</mi><mrow><mi>m</mi><mtext>&#x2009;</mtext><mo>.</mo><mtext>&#x2009;</mtext><mi>n</mi></mrow></msup></math>" id="MathJax-Element-114-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1560" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1561" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-msup" id="MJXc-Node-1562" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1563" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mi" id="MJXc-Node-1564" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">m</span></span></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1565" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.003em; white-space: pre;">⋅</span></span><span class="mjx-msup MJXc-space2" id="MJXc-Node-1566" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1567" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mi" id="MJXc-Node-1568" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">n</span></span></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1569" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-1570" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1571" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mrow" id="MJXc-Node-1572" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1573" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">m</span></span><span class="mjx-mtext" id="MJXc-Node-1574" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box !important; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" style="box-sizing: content-box !important; display: inline-block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-right: 0.167em;"></span></span></span><span class="mjx-mo" id="MJXc-Node-1575" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-top: -0.153em; padding-bottom: 0.366em; white-space: pre;">.</span></span><span class="mjx-mtext" id="MJXc-Node-1576" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box !important; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" style="box-sizing: content-box !important; display: inline-block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-right: 0.167em;"></span></span></span><span class="mjx-mi" id="MJXc-Node-1577" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">n</span></span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>�</mi><mi>�</mi></msup><mo>⋅</mo><msup><mi>�</mi><mi>�</mi></msup><mo>=</mo><msup><mi>�</mi><mrow><mi>�</mi><mtext> </mtext><mo>.</mo><mtext> </mtext><mi>�</mi></mrow></msup></math></span></span> sai ⇒ <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>x</mi><mi>m</mi></msup><mo>&#x22C5;</mo><msup><mi>x</mi><mi>n</mi></msup><mo>=</mo><msup><mi>x</mi><mrow><mi>m</mi><mtext>&#x2009;</mtext><mo>+</mo><mtext>&#x2009;</mtext><mi>n</mi></mrow></msup></math>" id="MathJax-Element-115-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1578" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1579" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-msup" id="MJXc-Node-1580" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1581" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mi" id="MJXc-Node-1582" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">m</span></span></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1583" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.003em; white-space: pre;">⋅</span></span><span class="mjx-msup MJXc-space2" id="MJXc-Node-1584" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1585" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mi" id="MJXc-Node-1586" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">n</span></span></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1587" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-1588" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1589" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mrow" id="MJXc-Node-1590" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1591" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">m</span></span><span class="mjx-mtext" id="MJXc-Node-1592" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box !important; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" style="box-sizing: content-box !important; display: inline-block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-right: 0.167em;"></span></span></span><span class="mjx-mo" id="MJXc-Node-1593" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mtext" id="MJXc-Node-1594" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box !important; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" style="box-sizing: content-box !important; display: inline-block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-right: 0.167em;"></span></span></span><span class="mjx-mi" id="MJXc-Node-1595" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">n</span></span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>�</mi><mi>�</mi></msup><mo>⋅</mo><msup><mi>�</mi><mi>�</mi></msup><mo>=</mo><msup><mi>�</mi><mrow><mi>�</mi><mtext> </mtext><mo>+</mo><mtext> </mtext><mi>�</mi></mrow></msup></math></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mfenced><msup><mi>x</mi><mi>m</mi></msup></mfenced><mi>n</mi></msup><mo>=</mo><msup><mi>x</mi><mrow><mi>m</mi><mtext>&#x2009;</mtext><mo>+</mo><mtext>&#x2009;</mtext><mi>n</mi></mrow></msup></math>" id="MathJax-Element-116-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1596" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1597" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-msup" id="MJXc-Node-1598" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-1599" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1600" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.574em; padding-top: 0.47em; white-space: pre;">(</span></span><span class="mjx-msup" id="MJXc-Node-1601" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1602" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mi" id="MJXc-Node-1603" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">m</span></span></span></span><span class="mjx-mo" id="MJXc-Node-1604" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.574em; padding-top: 0.47em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.71em;"><span class="mjx-mi" id="MJXc-Node-1605" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">n</span></span></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1606" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-1607" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1608" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mrow" id="MJXc-Node-1609" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1610" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">m</span></span><span class="mjx-mtext" id="MJXc-Node-1611" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box !important; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" style="box-sizing: content-box !important; display: inline-block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-right: 0.167em;"></span></span></span><span class="mjx-mo" id="MJXc-Node-1612" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mtext" id="MJXc-Node-1613" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box !important; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" style="box-sizing: content-box !important; display: inline-block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-right: 0.167em;"></span></span></span><span class="mjx-mi" id="MJXc-Node-1614" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">n</span></span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mfenced><msup><mi>�</mi><mi>�</mi></msup></mfenced><mi>�</mi></msup><mo>=</mo><msup><mi>�</mi><mrow><mi>�</mi><mtext> </mtext><mo>+</mo><mtext> </mtext><mi>�</mi></mrow></msup></math></span></span> sai ⇒ <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mfenced><msup><mi>x</mi><mi>m</mi></msup></mfenced><mi>n</mi></msup><mo>=</mo><msup><mi>x</mi><mrow><mi>m</mi><mo>&#x22C5;</mo><mi>n</mi></mrow></msup></math>" id="MathJax-Element-117-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1615" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1616" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-msup" id="MJXc-Node-1617" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-1618" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1619" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.574em; padding-top: 0.47em; white-space: pre;">(</span></span><span class="mjx-msup" id="MJXc-Node-1620" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1621" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mi" id="MJXc-Node-1622" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">m</span></span></span></span><span class="mjx-mo" id="MJXc-Node-1623" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.574em; padding-top: 0.47em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.71em;"><span class="mjx-mi" id="MJXc-Node-1624" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">n</span></span></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1625" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-1626" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1627" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mrow" id="MJXc-Node-1628" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1629" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">m</span></span><span class="mjx-mo" id="MJXc-Node-1630" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.003em; white-space: pre;">⋅</span></span><span class="mjx-mi" id="MJXc-Node-1631" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">n</span></span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mfenced><msup><mi>�</mi><mi>�</mi></msup></mfenced><mi>�</mi></msup><mo>=</mo><msup><mi>�</mi><mrow><mi>�</mi><mo>⋅</mo><mi>�</mi></mrow></msup></math></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><msup><mi>x</mi><mi>m</mi></msup><msup><mi>x</mi><mi>n</mi></msup></mfrac><mo>=</mo><msup><mi>x</mi><mrow><mi>m</mi><mtext>&#x2009;</mtext><mo>:</mo><mtext>&#x2009;</mtext><mi>n</mi></mrow></msup></math>" id="MathJax-Element-118-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1632" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1633" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1634" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.01em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.309em; width: 1.428em;"><span class="mjx-msup" id="MJXc-Node-1635" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1636" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 9.62709px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mi" id="MJXc-Node-1637" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">m</span></span></span></span></span><span class="mjx-denominator" style="bottom: -0.528em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 1.428em;"><span class="mjx-msup" id="MJXc-Node-1638" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1639" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 9.62709px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.409em;"><span class="mjx-mi" id="MJXc-Node-1640" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">n</span></span></span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.01em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.298em; vertical-align: -0.373em; width: 0px;"></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1641" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-1642" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1643" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mrow" id="MJXc-Node-1644" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1645" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">m</span></span><span class="mjx-mtext" id="MJXc-Node-1646" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box !important; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" style="box-sizing: content-box !important; display: inline-block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-right: 0.167em;"></span></span></span><span class="mjx-mo" id="MJXc-Node-1647" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.158em; white-space: pre;">:</span></span><span class="mjx-mtext" id="MJXc-Node-1648" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box !important; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" style="box-sizing: content-box !important; display: inline-block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-right: 0.167em;"></span></span></span><span class="mjx-mi" id="MJXc-Node-1649" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">n</span></span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><msup><mi>�</mi><mi>�</mi></msup><msup><mi>�</mi><mi>�</mi></msup></mfrac><mo>=</mo><msup><mi>�</mi><mrow><mi>�</mi><mtext> </mtext><mo>:</mo><mtext> </mtext><mi>�</mi></mrow></msup></math></span></span> (x ≠ 0, m ≥ n) sai ⇒ <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><msup><mi>x</mi><mi>m</mi></msup><msup><mi>x</mi><mi>n</mi></msup></mfrac><mo>=</mo><msup><mi>x</mi><mrow><mi>m</mi><mtext>&#x2009;</mtext><mo>&#x2212;</mo><mtext>&#x2009;</mtext><mi>n</mi></mrow></msup></math>" id="MathJax-Element-119-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1650" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1651" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1652" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.01em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.309em; width: 1.428em;"><span class="mjx-msup" id="MJXc-Node-1653" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1654" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 9.62709px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mi" id="MJXc-Node-1655" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">m</span></span></span></span></span><span class="mjx-denominator" style="bottom: -0.528em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 1.428em;"><span class="mjx-msup" id="MJXc-Node-1656" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1657" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 9.62709px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.409em;"><span class="mjx-mi" id="MJXc-Node-1658" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">n</span></span></span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.01em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.298em; vertical-align: -0.373em; width: 0px;"></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1659" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-1660" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1661" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.513em;"><span class="mjx-mrow" id="MJXc-Node-1662" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-1663" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">m</span></span><span class="mjx-mtext" id="MJXc-Node-1664" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box !important; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" style="box-sizing: content-box !important; display: inline-block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-right: 0.167em;"></span></span></span><span class="mjx-mo" id="MJXc-Node-1665" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mtext" id="MJXc-Node-1666" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char" style="box-sizing: content-box !important; display: block; white-space: pre;"><span class="mjx-charbox MJXc-TeX-main-R" style="box-sizing: content-box !important; display: inline-block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-right: 0.167em;"></span></span></span><span class="mjx-mi" id="MJXc-Node-1667" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">n</span></span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><msup><mi>�</mi><mi>�</mi></msup><msup><mi>�</mi><mi>�</mi></msup></mfrac><mo>=</mo><msup><mi>�</mi><mrow><mi>�</mi><mtext> </mtext><mo>−</mo><mtext> </mtext><mi>�</mi></mrow></msup></math></span></span>(x ≠ 0, m ≥ n)</p></span> </div> </div></div> </div><div class="separator" style="clear: both;"><br /><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span style="box-sizing: border-box; font-weight: 700;">Câu 26. </span>Giá trị của biểu thức <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>1</mn><mn>2</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mrow><mn>2</mn><mo>&#x22C5;</mo><mn>3</mn></mrow></mfrac><mo>+</mo><mfrac><mn>1</mn><mrow><mn>3</mn><mo>&#x22C5;</mo><mn>4</mn></mrow></mfrac><mo>+</mo><mn>...</mn><mo>+</mo><mfrac><mn>1</mn><mrow><mn>2021</mn><mo>&#x22C5;</mo><mn>2022</mn></mrow></mfrac></math>" id="MathJax-Element-120-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1668" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1669" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1670" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.276em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1671" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.569em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1672" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">2</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.305em; vertical-align: -0.402em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1673" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.416em; padding-top: 0.278em; white-space: pre;">+</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1674" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.045em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.276em; width: 1.478em;"><span class="mjx-mn" id="MJXc-Node-1675" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 1.478em;"><span class="mjx-mrow" id="MJXc-Node-1676" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-mn" id="MJXc-Node-1677" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">2</span></span><span class="mjx-mo" id="MJXc-Node-1678" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.002em; white-space: pre;">⋅</span></span><span class="mjx-mn" id="MJXc-Node-1679" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">3</span></span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 1.045em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.32em; vertical-align: -0.418em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1680" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.416em; padding-top: 0.278em; white-space: pre;">+</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1681" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.045em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.276em; width: 1.478em;"><span class="mjx-mn" id="MJXc-Node-1682" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.602em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 1.478em;"><span class="mjx-mrow" id="MJXc-Node-1683" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-mn" id="MJXc-Node-1684" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">3</span></span><span class="mjx-mo" id="MJXc-Node-1685" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.002em; white-space: pre;">⋅</span></span><span class="mjx-mn" id="MJXc-Node-1686" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">4</span></span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 1.045em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.328em; vertical-align: -0.426em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1687" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.416em; padding-top: 0.278em; white-space: pre;">+</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-1688" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; margin-top: -0.181em; padding-bottom: 0.324em; white-space: pre;">...</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1689" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.416em; padding-top: 0.278em; white-space: pre;">+</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1690" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 3.166em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.276em; width: 4.478em;"><span class="mjx-mn" id="MJXc-Node-1691" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 4.478em;"><span class="mjx-mrow" id="MJXc-Node-1692" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-mn" id="MJXc-Node-1693" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">2021</span></span><span class="mjx-mo" id="MJXc-Node-1694" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.002em; white-space: pre;">⋅</span></span><span class="mjx-mn" id="MJXc-Node-1695" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">2022</span></span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 3.166em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.32em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>1</mn><mn>2</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mrow><mn>2</mn><mo>⋅</mo><mn>3</mn></mrow></mfrac><mo>+</mo><mfrac><mn>1</mn><mrow><mn>3</mn><mo>⋅</mo><mn>4</mn></mrow></mfrac><mo>+</mo><mn>...</mn><mo>+</mo><mfrac><mn>1</mn><mrow><mn>2021</mn><mo>⋅</mo><mn>2022</mn></mrow></mfrac></math></span></span> là</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">A. 2022;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">B. 1;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">C. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>1</mn><mn>2022</mn></mfrac></math>" id="MathJax-Element-121-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1696" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1697" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1698" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.276em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1699" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1700" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">2022</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.32em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>1</mn><mn>2022</mn></mfrac></math></span></span>;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">D. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>2021</mn><mn>2022</mn></mfrac></math>" id="MathJax-Element-122-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1701" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1702" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1703" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.298em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1704" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">2021</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1705" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">2022</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.336em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>2021</mn><mn>2022</mn></mfrac></math></span></span>.</p><input size="1" type="num" value="" /></div><div class="separator" style="clear: both;"><div> <div> <input 1="" onclick="if (this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display != '') { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = '';this.innerText = ''; this.value = 'Ẩn'; } else { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = 'none'; this.innerText = ''; this.value = 'XEM'; }" style="font-size: 8pt; margin: 0px; padding: 1px; width: 30px;" type="button" value="XEM" /> </div> <div> <div style="background: #; border: 1px solid rgb(79, 79, 79); display: none; padding: 4px;"> <span style="font-size: medium;"><p> <span style="background-color: white; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; font-weight: 700; text-align: justify;">Đáp án đúng là:</span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>1</mn><mn>2</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mrow><mn>2</mn><mo>&#x22C5;</mo><mn>3</mn></mrow></mfrac><mo>+</mo><mfrac><mn>1</mn><mrow><mn>3</mn><mo>&#x22C5;</mo><mn>4</mn></mrow></mfrac><mo>+</mo><mn>...</mn><mo>+</mo><mfrac><mn>1</mn><mrow><mn>2021</mn><mo>&#x22C5;</mo><mn>2022</mn></mrow></mfrac></math>" id="MathJax-Element-123-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1706" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1707" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1708" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1709" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.588em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1710" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.332em; vertical-align: -0.416em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1711" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1712" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.045em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 1.478em;"><span class="mjx-mn" id="MJXc-Node-1713" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 1.478em;"><span class="mjx-mrow" id="MJXc-Node-1714" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-mn" id="MJXc-Node-1715" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2</span></span><span class="mjx-mo" id="MJXc-Node-1716" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.003em; white-space: pre;">⋅</span></span><span class="mjx-mn" id="MJXc-Node-1717" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.045em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.348em; vertical-align: -0.432em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1718" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1719" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.045em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 1.478em;"><span class="mjx-mn" id="MJXc-Node-1720" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.621em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 1.478em;"><span class="mjx-mrow" id="MJXc-Node-1721" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-mn" id="MJXc-Node-1722" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span><span class="mjx-mo" id="MJXc-Node-1723" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.003em; white-space: pre;">⋅</span></span><span class="mjx-mn" id="MJXc-Node-1724" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">4</span></span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.045em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.356em; vertical-align: -0.439em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1725" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-1726" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-top: -0.153em; padding-bottom: 0.366em; white-space: pre;">...</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1727" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1728" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 3.166em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 4.478em;"><span class="mjx-mn" id="MJXc-Node-1729" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 4.478em;"><span class="mjx-mrow" id="MJXc-Node-1730" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-mn" id="MJXc-Node-1731" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2021</span></span><span class="mjx-mo" id="MJXc-Node-1732" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.003em; white-space: pre;">⋅</span></span><span class="mjx-mn" id="MJXc-Node-1733" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2022</span></span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 3.166em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.348em; vertical-align: -0.432em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>1</mn><mn>2</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mrow><mn>2</mn><mo>⋅</mo><mn>3</mn></mrow></mfrac><mo>+</mo><mfrac><mn>1</mn><mrow><mn>3</mn><mo>⋅</mo><mn>4</mn></mrow></mfrac><mo>+</mo><mn>...</mn><mo>+</mo><mfrac><mn>1</mn><mrow><mn>2021</mn><mo>⋅</mo><mn>2022</mn></mrow></mfrac></math></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>1</mn><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>2</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mn>2</mn></mfrac><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>3</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mn>3</mn></mfrac><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>4</mn></mfrac><mo>+</mo><mn>...</mn><mo>+</mo><mfrac><mn>1</mn><mn>2021</mn></mfrac><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>2022</mn></mfrac></math>" id="MathJax-Element-124-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1734" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1735" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1736" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mn MJXc-space3" id="MJXc-Node-1737" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1738" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1739" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1740" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.588em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1741" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.332em; vertical-align: -0.416em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1742" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1743" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1744" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.588em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1745" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.332em; vertical-align: -0.416em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1746" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1747" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1748" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.609em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1749" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.347em; vertical-align: -0.431em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1750" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1751" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1752" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.609em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1753" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.347em; vertical-align: -0.431em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1754" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1755" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1756" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.599em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1757" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">4</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.34em; vertical-align: -0.424em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1758" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-1759" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-top: -0.153em; padding-bottom: 0.366em; white-space: pre;">...</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1760" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1761" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1762" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1763" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2021</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.348em; vertical-align: -0.432em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1764" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1765" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1766" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1767" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2022</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.348em; vertical-align: -0.432em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>1</mn><mo>−</mo><mfrac><mn>1</mn><mn>2</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mn>2</mn></mfrac><mo>−</mo><mfrac><mn>1</mn><mn>3</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mn>3</mn></mfrac><mo>−</mo><mfrac><mn>1</mn><mn>4</mn></mfrac><mo>+</mo><mn>...</mn><mo>+</mo><mfrac><mn>1</mn><mn>2021</mn></mfrac><mo>−</mo><mfrac><mn>1</mn><mn>2022</mn></mfrac></math></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>1</mn><mo>+</mo><mfenced><mrow><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>2</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></mfenced><mo>+</mo><mfenced><mrow><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>3</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mn>3</mn></mfrac></mrow></mfenced><mo>+</mo><mfenced><mrow><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>4</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mn>4</mn></mfrac></mrow></mfenced></math>" id="MathJax-Element-125-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1768" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1769" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1770" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mn MJXc-space3" id="MJXc-Node-1771" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1772" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mfenced MJXc-space2" id="MJXc-Node-1773" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-mo" id="MJXc-Node-1774" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size1-R, MJXc-TeX-size1-Rw; padding-bottom: 0.626em; padding-top: 0.626em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-1775" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1776" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-1777" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1778" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.588em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1779" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.332em; vertical-align: -0.416em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1780" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1781" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1782" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.588em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1783" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.332em; vertical-align: -0.416em; width: 0px;"></span></span></span><span class="mjx-mo" id="MJXc-Node-1784" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size1-R, MJXc-TeX-size1-Rw; padding-bottom: 0.626em; padding-top: 0.626em; white-space: pre;">)</span></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1785" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mfenced MJXc-space2" id="MJXc-Node-1786" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-mo" id="MJXc-Node-1787" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-1788" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1789" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-1790" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1791" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.609em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1792" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.347em; vertical-align: -0.431em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1793" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1794" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1795" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.609em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1796" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.347em; vertical-align: -0.431em; width: 0px;"></span></span></span><span class="mjx-mo" id="MJXc-Node-1797" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">)</span></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1798" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mfenced MJXc-space2" id="MJXc-Node-1799" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-mo" id="MJXc-Node-1800" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-1801" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1802" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-1803" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1804" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.599em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1805" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">4</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.34em; vertical-align: -0.424em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1806" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1807" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1808" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.599em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1809" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">4</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.34em; vertical-align: -0.424em; width: 0px;"></span></span></span><span class="mjx-mo" id="MJXc-Node-1810" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">)</span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>1</mn><mo>+</mo><mfenced><mrow><mo>−</mo><mfrac><mn>1</mn><mn>2</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></mfenced><mo>+</mo><mfenced><mrow><mo>−</mo><mfrac><mn>1</mn><mn>3</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mn>3</mn></mfrac></mrow></mfenced><mo>+</mo><mfenced><mrow><mo>−</mo><mfrac><mn>1</mn><mn>4</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mn>4</mn></mfrac></mrow></mfenced></math></span></span><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>+</mo><mn>...</mn><mo>+</mo><mfenced><mrow><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>2021</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mn>2021</mn></mfrac></mrow></mfenced><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>2022</mn></mfrac></math>" id="MathJax-Element-126-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1811" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1812" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1813" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mn" id="MJXc-Node-1814" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-top: -0.153em; padding-bottom: 0.366em; white-space: pre;">...</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1815" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mfenced MJXc-space2" id="MJXc-Node-1816" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-mo" id="MJXc-Node-1817" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-1818" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1819" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-1820" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1821" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1822" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2021</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.348em; vertical-align: -0.432em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1823" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1824" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1825" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1826" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2021</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.348em; vertical-align: -0.432em; width: 0px;"></span></span></span><span class="mjx-mo" id="MJXc-Node-1827" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">)</span></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1828" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1829" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1830" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1831" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2022</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.348em; vertical-align: -0.432em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>+</mo><mn>...</mn><mo>+</mo><mfenced><mrow><mo>−</mo><mfrac><mn>1</mn><mn>2021</mn></mfrac><mo>+</mo><mfrac><mn>1</mn><mn>2021</mn></mfrac></mrow></mfenced><mo>−</mo><mfrac><mn>1</mn><mn>2022</mn></mfrac></math></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>1</mn><mo>+</mo><mn>0</mn><mo>+</mo><mn>0</mn><mo>+</mo><mn>0</mn><mo>+</mo><mn>...</mn><mo>+</mo><mn>0</mn><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>2022</mn></mfrac></math>" id="MathJax-Element-127-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1832" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1833" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1834" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mn MJXc-space3" id="MJXc-Node-1835" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1836" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-1837" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">0</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1838" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-1839" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">0</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1840" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-1841" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">0</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1842" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-1843" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-top: -0.153em; padding-bottom: 0.366em; white-space: pre;">...</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1844" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-1845" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">0</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1846" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1847" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1848" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1849" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2022</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.348em; vertical-align: -0.432em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>1</mn><mo>+</mo><mn>0</mn><mo>+</mo><mn>0</mn><mo>+</mo><mn>0</mn><mo>+</mo><mn>...</mn><mo>+</mo><mn>0</mn><mo>−</mo><mfrac><mn>1</mn><mn>2022</mn></mfrac></math></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>1</mn><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>2022</mn></mfrac></math>" id="MathJax-Element-128-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1850" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1851" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1852" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mn MJXc-space3" id="MJXc-Node-1853" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1854" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1855" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1856" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1857" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2022</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.348em; vertical-align: -0.432em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>1</mn><mo>−</mo><mfrac><mn>1</mn><mn>2022</mn></mfrac></math></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mfrac><mn>2021</mn><mn>2022</mn></mfrac></math>" id="MathJax-Element-129-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1858" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1859" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1860" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mfrac MJXc-space3" id="MJXc-Node-1861" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.556em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.318em; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1862" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2021</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 2.2em;"><span class="mjx-mn" id="MJXc-Node-1863" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2022</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.556em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.432em; width: 0px;"></span></span></span></span></span></p></span> </div> </div></div> </div><div class="separator" style="clear: both;"><br /><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span style="box-sizing: border-box; font-weight: 700;">Câu 27. </span>Một ô tô đã đi 110 km trong 3 giờ. Trong giờ thứ nhất, xe đi được <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>1</mn><mn>3</mn></mfrac></math>" id="MathJax-Element-130-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1864" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1865" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1866" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.276em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1867" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.59em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1868" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">3</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.32em; vertical-align: -0.417em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>1</mn><mn>3</mn></mfrac></math></span></span> quãng đường. Trong giờ thứ hai, xe đi được <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>2</mn><mn>5</mn></mfrac></math>" id="MathJax-Element-131-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1869" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1870" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1871" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.276em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1872" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">2</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1873" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">5</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.32em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>2</mn><mn>5</mn></mfrac></math></span></span> quãng đường còn lại. Hỏi trong giờ thứ ba xe đi được bao nhiêu ki-lô-mét?</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">A. 45 km;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">B. 44 km;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">C. 47 km;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">D. 46 km.</p><input size="1" type="num" value="" /></div><div class="separator" style="clear: both;"><div> <div> <input 1="" onclick="if (this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display != '') { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = '';this.innerText = ''; this.value = 'Ẩn'; } else { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = 'none'; this.innerText = ''; this.value = 'XEM'; }" style="font-size: 8pt; margin: 0px; padding: 1px; width: 30px;" type="button" value="XEM" /> </div> <div> <div style="background: #; border: 1px solid rgb(79, 79, 79); display: none; padding: 4px;"> <span style="font-size: medium;"><p> <span style="background-color: white; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; font-weight: 700; text-align: justify;">Đáp án đúng là: B</span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">Giờ thứ nhất đi được số ki-lô-mét là:</p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>110</mn><mo>.</mo><mfrac><mn>1</mn><mn>3</mn></mfrac><mo>=</mo><mfrac><mn>110</mn><mn>3</mn></mfrac></math>" id="MathJax-Element-132-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1874" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1875" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mn" id="MJXc-Node-1876" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">110</span></span><span class="mjx-mo" id="MJXc-Node-1877" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-top: -0.153em; padding-bottom: 0.366em; white-space: pre;">.</span></span><span class="mjx-mfrac MJXc-space1" id="MJXc-Node-1878" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.167em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1879" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.609em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1880" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.347em; vertical-align: -0.431em; width: 0px;"></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1881" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mfrac MJXc-space3" id="MJXc-Node-1882" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.202em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.318em; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-1883" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">110</span></span></span><span class="mjx-denominator" style="bottom: -0.609em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-1884" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.202em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.431em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>110</mn><mo>.</mo><mfrac><mn>1</mn><mn>3</mn></mfrac><mo>=</mo><mfrac><mn>110</mn><mn>3</mn></mfrac></math></span></span> (km)</p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">Giờ thứ hai đi được số ki-lô-mét là:</p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced><mrow><mn>110</mn><mo>&#x2212;</mo><mfrac><mn>110</mn><mn>3</mn></mfrac></mrow></mfenced><mo>&#x22C5;</mo><mfrac><mn>2</mn><mn>5</mn></mfrac><mo>=</mo><mfrac><mn>88</mn><mn>3</mn></mfrac></math>" id="MathJax-Element-133-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1885" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1886" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-1887" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1888" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-1889" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mn" id="MJXc-Node-1890" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">110</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1891" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1892" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.202em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.318em; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-1893" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">110</span></span></span><span class="mjx-denominator" style="bottom: -0.609em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-1894" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.202em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.431em; width: 0px;"></span></span></span><span class="mjx-mo" id="MJXc-Node-1895" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">)</span></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1896" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.003em; white-space: pre;">⋅</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1897" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1898" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1899" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">5</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.348em; vertical-align: -0.432em; width: 0px;"></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-1900" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mfrac MJXc-space3" id="MJXc-Node-1901" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.849em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.318em; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-1902" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">88</span></span></span><span class="mjx-denominator" style="bottom: -0.609em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-1903" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.849em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.431em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced><mrow><mn>110</mn><mo>−</mo><mfrac><mn>110</mn><mn>3</mn></mfrac></mrow></mfenced><mo>⋅</mo><mfrac><mn>2</mn><mn>5</mn></mfrac><mo>=</mo><mfrac><mn>88</mn><mn>3</mn></mfrac></math></span></span> (km)</p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">Giờ thứ ba xe đi được số ki-lô-mét là:</p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>110</mn><mo>&#x2212;</mo><mfenced><mrow><mfrac><mn>110</mn><mn>3</mn></mfrac><mo>+</mo><mfrac><mn>88</mn><mn>3</mn></mfrac></mrow></mfenced></math>" id="MathJax-Element-134-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1904" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1905" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mn" id="MJXc-Node-1906" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">110</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1907" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfenced MJXc-space2" id="MJXc-Node-1908" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-mo" id="MJXc-Node-1909" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-1910" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1911" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.202em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.318em; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-1912" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">110</span></span></span><span class="mjx-denominator" style="bottom: -0.609em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-1913" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.202em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.431em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1914" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1915" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.849em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.318em; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-1916" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">88</span></span></span><span class="mjx-denominator" style="bottom: -0.609em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-1917" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.849em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.431em; width: 0px;"></span></span></span><span class="mjx-mo" id="MJXc-Node-1918" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">)</span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>110</mn><mo>−</mo><mfenced><mrow><mfrac><mn>110</mn><mn>3</mn></mfrac><mo>+</mo><mfrac><mn>88</mn><mn>3</mn></mfrac></mrow></mfenced></math></span></span> = 44 (km)</p></span> </div> </div></div> </div><div class="separator" style="clear: both;"><br /><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span style="box-sizing: border-box; font-weight: 700;">Câu 28. </span>Tính <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>7</mn><mo>&#x22C5;</mo><msup><mn>2</mn><mn>3</mn></msup><mo>&#x2212;</mo><mn>5</mn><mfenced><mrow><mfenced><mrow><mn>10</mn><mo>,</mo><mn>51</mn><mo>+</mo><mn>4</mn><mo>&#x22C5;</mo><msup><mfenced><mrow><mfrac><mn>3</mn><mn>4</mn></mfrac><mo>&#x2212;</mo><mfrac><mn>2</mn><mn>5</mn></mfrac></mrow></mfenced><mn>2</mn></msup></mrow></mfenced><mo>&#x2212;</mo><msup><mn>2021</mn><mn>0</mn></msup></mrow></mfenced></math>" id="MathJax-Element-135-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1919" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1920" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mn" id="MJXc-Node-1921" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">7</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1922" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.002em; white-space: pre;">⋅</span></span><span class="mjx-msup MJXc-space2" id="MJXc-Node-1923" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mn" id="MJXc-Node-1924" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">2</span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 15.3985px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.591em;"><span class="mjx-mn" id="MJXc-Node-1925" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">3</span></span></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1926" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.416em; padding-top: 0.278em; white-space: pre;">−</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-1927" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">5</span></span><span class="mjx-mfenced MJXc-space1" id="MJXc-Node-1928" style="box-sizing: content-box; display: inline-block; margin-left: 0.167em;"><span class="mjx-mo" id="MJXc-Node-1929" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" face="MJXc-TeX-size2-R, MJXc-TeX-size2-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.921em; padding-top: 0.921em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-1930" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-1931" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1932" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" face="MJXc-TeX-size2-R, MJXc-TeX-size2-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.921em; padding-top: 0.921em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-1933" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mn" id="MJXc-Node-1934" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">10</span></span><span class="mjx-mo" id="MJXc-Node-1935" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; margin-top: -0.181em; padding-bottom: 0.553em; white-space: pre;">,</span></span><span class="mjx-mn MJXc-space1" id="MJXc-Node-1936" style="box-sizing: content-box; display: inline-block; margin-left: 0.167em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">51</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1937" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.416em; padding-top: 0.278em; white-space: pre;">+</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-1938" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">4</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1939" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.002em; white-space: pre;">⋅</span></span><span class="mjx-msup MJXc-space2" id="MJXc-Node-1940" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-1941" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1942" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" face="MJXc-TeX-size1-R, MJXc-TeX-size1-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.645em; padding-top: 0.645em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-1943" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1944" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.297em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1945" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">3</span></span></span><span class="mjx-denominator" style="bottom: -0.58em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1946" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">4</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.327em; vertical-align: -0.41em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1947" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.416em; padding-top: 0.278em; white-space: pre;">−</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1948" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.276em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1949" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">2</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1950" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">5</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.32em; vertical-align: -0.418em; width: 0px;"></span></span></span><span class="mjx-mo" id="MJXc-Node-1951" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" face="MJXc-TeX-size1-R, MJXc-TeX-size1-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.645em; padding-top: 0.645em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 15.3985px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.911em;"><span class="mjx-mn" id="MJXc-Node-1952" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">2</span></span></span></span></span><span class="mjx-mo" id="MJXc-Node-1953" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" face="MJXc-TeX-size2-R, MJXc-TeX-size2-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.921em; padding-top: 0.921em; white-space: pre;">)</span></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1954" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.416em; padding-top: 0.278em; white-space: pre;">−</span></span><span class="mjx-msup MJXc-space2" id="MJXc-Node-1955" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mn" id="MJXc-Node-1956" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">2021</span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 15.3985px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.591em;"><span class="mjx-mn" id="MJXc-Node-1957" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">0</span></span></span></span></span><span class="mjx-mo" id="MJXc-Node-1958" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" face="MJXc-TeX-size2-R, MJXc-TeX-size2-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.921em; padding-top: 0.921em; white-space: pre;">)</span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>7</mn><mo>⋅</mo><msup><mn>2</mn><mn>3</mn></msup><mo>−</mo><mn>5</mn><mfenced><mrow><mfenced><mrow><mn>10</mn><mo>,</mo><mn>51</mn><mo>+</mo><mn>4</mn><mo>⋅</mo><msup><mfenced><mrow><mfrac><mn>3</mn><mn>4</mn></mfrac><mo>−</mo><mfrac><mn>2</mn><mn>5</mn></mfrac></mrow></mfenced><mn>2</mn></msup></mrow></mfenced><mo>−</mo><msup><mn>2021</mn><mn>0</mn></msup></mrow></mfenced></math></span></span></p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">A. 6;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">B. 2021;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">C. 56;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">D. 51.</p><input size="1" type="num" value="" /></div><div class="separator" style="clear: both;"><div> <div> <input 1="" onclick="if (this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display != '') { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = '';this.innerText = ''; this.value = 'Ẩn'; } else { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = 'none'; this.innerText = ''; this.value = 'XEM'; }" style="font-size: 8pt; margin: 0px; padding: 1px; width: 30px;" type="button" value="XEM" /> </div> <div> <div style="background: #; border: 1px solid rgb(79, 79, 79); display: none; padding: 4px;"> <span style="font-size: medium;"><p> <span style="background-color: white; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; font-weight: 700; text-align: justify;">Đáp án đúng là: A</span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>7</mn><mo>&#x22C5;</mo><msup><mn>2</mn><mn>3</mn></msup><mo>&#x2212;</mo><mn>5</mn><mfenced><mrow><mfenced><mrow><mn>10</mn><mo>,</mo><mn>51</mn><mo>+</mo><mn>4</mn><mo>&#x22C5;</mo><msup><mfenced><mrow><mfrac><mn>3</mn><mn>4</mn></mfrac><mo>&#x2212;</mo><mfrac><mn>2</mn><mn>5</mn></mfrac></mrow></mfenced><mn>2</mn></msup></mrow></mfenced><mo>&#x2212;</mo><msup><mn>2021</mn><mn>0</mn></msup></mrow></mfenced></math>" id="MathJax-Element-136-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1959" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-1960" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mn" id="MJXc-Node-1961" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">7</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1962" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.003em; white-space: pre;">⋅</span></span><span class="mjx-msup MJXc-space2" id="MJXc-Node-1963" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mn" id="MJXc-Node-1964" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.591em;"><span class="mjx-mn" id="MJXc-Node-1965" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1966" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-1967" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">5</span></span><span class="mjx-mfenced MJXc-space1" id="MJXc-Node-1968" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.167em;"><span class="mjx-mo" id="MJXc-Node-1969" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size3-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size3-R, MJXc-TeX-size3-Rw; padding-bottom: 1.249em; padding-top: 1.249em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-1970" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-1971" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1972" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size3-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size3-R, MJXc-TeX-size3-Rw; padding-bottom: 1.249em; padding-top: 1.249em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-1973" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mn" id="MJXc-Node-1974" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">10</span></span><span class="mjx-mo" id="MJXc-Node-1975" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-top: -0.153em; padding-bottom: 0.522em; white-space: pre;">,</span></span><span class="mjx-mn MJXc-space1" id="MJXc-Node-1976" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.167em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">51</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1977" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-1978" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">4</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1979" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.003em; white-space: pre;">⋅</span></span><span class="mjx-msup MJXc-space2" id="MJXc-Node-1980" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-1981" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-1982" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-1983" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfrac" id="MJXc-Node-1984" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.317em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1985" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span><span class="mjx-denominator" style="bottom: -0.599em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1986" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">4</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.355em; vertical-align: -0.424em; width: 0px;"></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1987" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-1988" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1989" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-1990" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">5</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.348em; vertical-align: -0.432em; width: 0px;"></span></span></span><span class="mjx-mo" id="MJXc-Node-1991" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 1.276em;"><span class="mjx-mn" id="MJXc-Node-1992" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2</span></span></span></span></span><span class="mjx-mo" id="MJXc-Node-1993" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size3-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size3-R, MJXc-TeX-size3-Rw; padding-bottom: 1.249em; padding-top: 1.249em; white-space: pre;">)</span></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-1994" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-msup MJXc-space2" id="MJXc-Node-1995" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mn" id="MJXc-Node-1996" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2021</span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.591em;"><span class="mjx-mn" id="MJXc-Node-1997" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">0</span></span></span></span></span><span class="mjx-mo" id="MJXc-Node-1998" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size3-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size3-R, MJXc-TeX-size3-Rw; padding-bottom: 1.249em; padding-top: 1.249em; white-space: pre;">)</span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>7</mn><mo>⋅</mo><msup><mn>2</mn><mn>3</mn></msup><mo>−</mo><mn>5</mn><mfenced><mrow><mfenced><mrow><mn>10</mn><mo>,</mo><mn>51</mn><mo>+</mo><mn>4</mn><mo>⋅</mo><msup><mfenced><mrow><mfrac><mn>3</mn><mn>4</mn></mfrac><mo>−</mo><mfrac><mn>2</mn><mn>5</mn></mfrac></mrow></mfenced><mn>2</mn></msup></mrow></mfenced><mo>−</mo><msup><mn>2021</mn><mn>0</mn></msup></mrow></mfenced></math></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>7</mn><mo>&#x22C5;</mo><mn>8</mn><mo>&#x2212;</mo><mn>5</mn><mfenced><mrow><mfenced><mrow><mn>10</mn><mo>,</mo><mn>51</mn><mo>+</mo><mn>4</mn><mo>&#x22C5;</mo><msup><mfenced><mfrac><mn>7</mn><mn>20</mn></mfrac></mfenced><mn>2</mn></msup></mrow></mfenced><mo>&#x2212;</mo><mn>1</mn></mrow></mfenced></math>" id="MathJax-Element-137-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-1999" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2000" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2001" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mn MJXc-space3" id="MJXc-Node-2002" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">7</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2003" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.003em; white-space: pre;">⋅</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-2004" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">8</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2005" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-2006" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">5</span></span><span class="mjx-mfenced MJXc-space1" id="MJXc-Node-2007" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.167em;"><span class="mjx-mo" id="MJXc-Node-2008" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size3-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size3-R, MJXc-TeX-size3-Rw; padding-bottom: 1.249em; padding-top: 1.249em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-2009" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2010" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2011" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size3-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size3-R, MJXc-TeX-size3-Rw; padding-bottom: 1.249em; padding-top: 1.249em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-2012" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mn" id="MJXc-Node-2013" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">10</span></span><span class="mjx-mo" id="MJXc-Node-2014" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-top: -0.153em; padding-bottom: 0.522em; white-space: pre;">,</span></span><span class="mjx-mn MJXc-space1" id="MJXc-Node-2015" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.167em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">51</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2016" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-2017" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">4</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2018" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.003em; white-space: pre;">⋅</span></span><span class="mjx-msup MJXc-space2" id="MJXc-Node-2019" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2020" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2021" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">(</span></span><span class="mjx-mfrac" id="MJXc-Node-2022" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.849em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.328em; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-2023" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">7</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-2024" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">20</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.849em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.37em; vertical-align: -0.432em; width: 0px;"></span></span><span class="mjx-mo" id="MJXc-Node-2025" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 1.276em;"><span class="mjx-mn" id="MJXc-Node-2026" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2</span></span></span></span></span><span class="mjx-mo" id="MJXc-Node-2027" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size3-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size3-R, MJXc-TeX-size3-Rw; padding-bottom: 1.249em; padding-top: 1.249em; white-space: pre;">)</span></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2028" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-2029" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-mo" id="MJXc-Node-2030" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size3-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size3-R, MJXc-TeX-size3-Rw; padding-bottom: 1.249em; padding-top: 1.249em; white-space: pre;">)</span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>7</mn><mo>⋅</mo><mn>8</mn><mo>−</mo><mn>5</mn><mfenced><mrow><mfenced><mrow><mn>10</mn><mo>,</mo><mn>51</mn><mo>+</mo><mn>4</mn><mo>⋅</mo><msup><mfenced><mfrac><mn>7</mn><mn>20</mn></mfrac></mfenced><mn>2</mn></msup></mrow></mfenced><mo>−</mo><mn>1</mn></mrow></mfenced></math></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>56</mn><mo>&#x2212;</mo><mn>5</mn><mfenced><mrow><mfenced><mrow><mn>10</mn><mo>,</mo><mn>51</mn><mo>+</mo><mn>4</mn><mo>&#x22C5;</mo><mfrac><mn>49</mn><mn>400</mn></mfrac></mrow></mfenced><mo>&#x2212;</mo><mn>1</mn></mrow></mfenced></math>" id="MathJax-Element-138-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2031" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2032" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2033" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mn MJXc-space3" id="MJXc-Node-2034" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">56</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2035" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-2036" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">5</span></span><span class="mjx-mfenced MJXc-space1" id="MJXc-Node-2037" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.167em;"><span class="mjx-mo" id="MJXc-Node-2038" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-2039" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2040" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2041" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-2042" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mn" id="MJXc-Node-2043" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">10</span></span><span class="mjx-mo" id="MJXc-Node-2044" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-top: -0.153em; padding-bottom: 0.522em; white-space: pre;">,</span></span><span class="mjx-mn MJXc-space1" id="MJXc-Node-2045" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.167em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">51</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2046" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-2047" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">4</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2048" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.003em; white-space: pre;">⋅</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-2049" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.202em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.329em; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-2050" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">49</span></span></span><span class="mjx-denominator" style="bottom: -0.621em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-2051" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">400</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.202em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.379em; vertical-align: -0.439em; width: 0px;"></span></span></span><span class="mjx-mo" id="MJXc-Node-2052" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">)</span></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2053" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-2054" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-mo" id="MJXc-Node-2055" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">)</span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>56</mn><mo>−</mo><mn>5</mn><mfenced><mrow><mfenced><mrow><mn>10</mn><mo>,</mo><mn>51</mn><mo>+</mo><mn>4</mn><mo>⋅</mo><mfrac><mn>49</mn><mn>400</mn></mfrac></mrow></mfenced><mo>−</mo><mn>1</mn></mrow></mfenced></math></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>56</mn><mo>&#x2212;</mo><mn>5</mn><mfenced><mrow><mfenced><mrow><mn>10</mn><mo>,</mo><mn>51</mn><mo>+</mo><mfrac><mn>49</mn><mn>100</mn></mfrac></mrow></mfenced><mo>&#x2212;</mo><mn>1</mn></mrow></mfenced></math>" id="MathJax-Element-139-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2056" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2057" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2058" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mn MJXc-space3" id="MJXc-Node-2059" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">56</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2060" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-2061" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">5</span></span><span class="mjx-mfenced MJXc-space1" id="MJXc-Node-2062" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.167em;"><span class="mjx-mo" id="MJXc-Node-2063" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-2064" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2065" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2066" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-2067" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mn" id="MJXc-Node-2068" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">10</span></span><span class="mjx-mo" id="MJXc-Node-2069" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-top: -0.153em; padding-bottom: 0.522em; white-space: pre;">,</span></span><span class="mjx-mn MJXc-space1" id="MJXc-Node-2070" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.167em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">51</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2071" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mfrac MJXc-space2" id="MJXc-Node-2072" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.202em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.329em; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-2073" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">49</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-2074" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">100</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.202em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.371em; vertical-align: -0.432em; width: 0px;"></span></span></span><span class="mjx-mo" id="MJXc-Node-2075" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">)</span></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2076" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-2077" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-mo" id="MJXc-Node-2078" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">)</span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>56</mn><mo>−</mo><mn>5</mn><mfenced><mrow><mfenced><mrow><mn>10</mn><mo>,</mo><mn>51</mn><mo>+</mo><mfrac><mn>49</mn><mn>100</mn></mfrac></mrow></mfenced><mo>−</mo><mn>1</mn></mrow></mfenced></math></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>56</mn><mo>&#x2212;</mo><mn>5</mn><mfenced><mrow><mfenced><mrow><mn>10</mn><mo>,</mo><mn>51</mn><mo>+</mo><mn>0</mn><mo>,</mo><mn>49</mn></mrow></mfenced><mo>&#x2212;</mo><mn>1</mn></mrow></mfenced></math>" id="MathJax-Element-140-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2079" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2080" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2081" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mn MJXc-space3" id="MJXc-Node-2082" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">56</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2083" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-2084" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">5</span></span><span class="mjx-mfenced MJXc-space1" id="MJXc-Node-2085" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.167em;"><span class="mjx-mo" id="MJXc-Node-2086" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.574em; padding-top: 0.47em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-2087" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2088" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2089" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.574em; padding-top: 0.47em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-2090" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mn" id="MJXc-Node-2091" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">10</span></span><span class="mjx-mo" id="MJXc-Node-2092" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-top: -0.153em; padding-bottom: 0.522em; white-space: pre;">,</span></span><span class="mjx-mn MJXc-space1" id="MJXc-Node-2093" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.167em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">51</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2094" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-2095" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">0</span></span><span class="mjx-mo" id="MJXc-Node-2096" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; margin-top: -0.153em; padding-bottom: 0.522em; white-space: pre;">,</span></span><span class="mjx-mn MJXc-space1" id="MJXc-Node-2097" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.167em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">49</span></span></span><span class="mjx-mo" id="MJXc-Node-2098" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.574em; padding-top: 0.47em; white-space: pre;">)</span></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2099" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-2100" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-mo" id="MJXc-Node-2101" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.574em; padding-top: 0.47em; white-space: pre;">)</span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>56</mn><mo>−</mo><mn>5</mn><mfenced><mrow><mfenced><mrow><mn>10</mn><mo>,</mo><mn>51</mn><mo>+</mo><mn>0</mn><mo>,</mo><mn>49</mn></mrow></mfenced><mo>−</mo><mn>1</mn></mrow></mfenced></math></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>56</mn><mo>&#x2212;</mo><mn>5</mn><mfenced><mrow><mn>11</mn><mo>&#x2212;</mo><mn>1</mn></mrow></mfenced></math>" id="MathJax-Element-141-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2102" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2103" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2104" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mn MJXc-space3" id="MJXc-Node-2105" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">56</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2106" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-2107" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">5</span></span><span class="mjx-mfenced MJXc-space1" id="MJXc-Node-2108" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.167em;"><span class="mjx-mo" id="MJXc-Node-2109" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.574em; padding-top: 0.47em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-2110" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mn" id="MJXc-Node-2111" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">11</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2112" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mn MJXc-space2" id="MJXc-Node-2113" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-mo" id="MJXc-Node-2114" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.574em; padding-top: 0.47em; white-space: pre;">)</span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>56</mn><mo>−</mo><mn>5</mn><mfenced><mrow><mn>11</mn><mo>−</mo><mn>1</mn></mrow></mfenced></math></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">= 56 - 5.10 = 6</p></span> </div> </div></div> </div><div class="separator" style="clear: both;"><br /><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span style="box-sizing: border-box; font-weight: 700;">Câu 29. </span>Tìm x, biết <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>:</mo><msup><mfenced><mrow><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></mfenced><mn>5</mn></msup><mo>=</mo><msup><mfenced><mrow><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></mfenced><mn>3</mn></msup></math>" id="MathJax-Element-142-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2115" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2116" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2117" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2118" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.14em; white-space: pre;">:</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-2119" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2120" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2121" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" face="MJXc-TeX-size1-R, MJXc-TeX-size1-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.645em; padding-top: 0.645em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-2122" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2123" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.416em; padding-top: 0.278em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-2124" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.276em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2125" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.569em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2126" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">2</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.305em; vertical-align: -0.402em; width: 0px;"></span></span></span><span class="mjx-mo" id="MJXc-Node-2127" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" face="MJXc-TeX-size1-R, MJXc-TeX-size1-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.645em; padding-top: 0.645em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 15.3985px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.89em;"><span class="mjx-mn" id="MJXc-Node-2128" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">5</span></span></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2129" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.094em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-2130" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2131" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2132" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" face="MJXc-TeX-size1-R, MJXc-TeX-size1-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.645em; padding-top: 0.645em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-2133" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2134" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.416em; padding-top: 0.278em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-2135" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.276em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2136" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.569em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2137" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">2</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.305em; vertical-align: -0.402em; width: 0px;"></span></span></span><span class="mjx-mo" id="MJXc-Node-2138" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" face="MJXc-TeX-size1-R, MJXc-TeX-size1-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.645em; padding-top: 0.645em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 15.3985px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.89em;"><span class="mjx-mn" id="MJXc-Node-2139" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">3</span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>:</mo><msup><mfenced><mrow><mo>−</mo><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></mfenced><mn>5</mn></msup><mo>=</mo><msup><mfenced><mrow><mo>−</mo><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></mfenced><mn>3</mn></msup></math></span></span></p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">A. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>=</mo><mfrac><mn>1</mn><mn>256</mn></mfrac></math>" id="MathJax-Element-143-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2140" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2141" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2142" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2143" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.094em; white-space: pre;">=</span></span><span class="mjx-mfrac MJXc-space3" id="MJXc-Node-2144" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.202em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.276em; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-2145" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-2146" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">256</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 1.202em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.32em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>=</mo><mfrac><mn>1</mn><mn>256</mn></mfrac></math></span></span>;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">B. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>=</mo><mfrac><mn>1</mn><mn>16</mn></mfrac></math>" id="MathJax-Element-144-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2147" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2148" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2149" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2150" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.094em; white-space: pre;">=</span></span><span class="mjx-mfrac MJXc-space3" id="MJXc-Node-2151" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.849em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.276em; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-2152" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-2153" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">16</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 0.849em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.32em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>=</mo><mfrac><mn>1</mn><mn>16</mn></mfrac></math></span></span>;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">C. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>=</mo><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>256</mn></mfrac></math>" id="MathJax-Element-145-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2154" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2155" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2156" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2157" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.094em; white-space: pre;">=</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2158" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.416em; padding-top: 0.278em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-2159" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.202em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.276em; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-2160" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-2161" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">256</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 1.202em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.32em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>=</mo><mo>−</mo><mfrac><mn>1</mn><mn>256</mn></mfrac></math></span></span>;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">D. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>=</mo><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>16</mn></mfrac></math>" id="MathJax-Element-146-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2162" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2163" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2164" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2165" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.094em; white-space: pre;">=</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2166" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.416em; padding-top: 0.278em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-2167" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.849em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.276em; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-2168" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.37em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-2169" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">16</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 0.849em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.32em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>=</mo><mo>−</mo><mfrac><mn>1</mn><mn>16</mn></mfrac></math></span></span>.</p><input size="1" type="num" value="" /></div><div class="separator" style="clear: both;"><div> <div> <input 1="" onclick="if (this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display != '') { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = '';this.innerText = ''; this.value = 'Ẩn'; } else { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = 'none'; this.innerText = ''; this.value = 'XEM'; }" style="font-size: 8pt; margin: 0px; padding: 1px; width: 30px;" type="button" value="XEM" /> </div> <div> <div style="background: #; border: 1px solid rgb(79, 79, 79); display: none; padding: 4px;"> <span style="font-size: medium;"><p> <span style="background-color: white; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; font-weight: 700; text-align: justify;">Đáp án đúng là: A</span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>:</mo><msup><mfenced><mrow><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></mfenced><mn>5</mn></msup><mo>=</mo><msup><mfenced><mrow><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></mfenced><mn>3</mn></msup></math>" id="MathJax-Element-147-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2170" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2171" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2172" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2173" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.158em; white-space: pre;">:</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-2174" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2175" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2176" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size1-R, MJXc-TeX-size1-Rw; padding-bottom: 0.626em; padding-top: 0.626em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-2177" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2178" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-2179" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2180" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.588em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2181" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.332em; vertical-align: -0.416em; width: 0px;"></span></span></span><span class="mjx-mo" id="MJXc-Node-2182" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size1-R, MJXc-TeX-size1-Rw; padding-bottom: 0.626em; padding-top: 0.626em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.909em;"><span class="mjx-mn" id="MJXc-Node-2183" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">5</span></span></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2184" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-2185" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2186" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2187" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size1-R, MJXc-TeX-size1-Rw; padding-bottom: 0.626em; padding-top: 0.626em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-2188" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2189" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-2190" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2191" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.588em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2192" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.332em; vertical-align: -0.416em; width: 0px;"></span></span></span><span class="mjx-mo" id="MJXc-Node-2193" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size1-R, MJXc-TeX-size1-Rw; padding-bottom: 0.626em; padding-top: 0.626em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.909em;"><span class="mjx-mn" id="MJXc-Node-2194" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>:</mo><msup><mfenced><mrow><mo>−</mo><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></mfenced><mn>5</mn></msup><mo>=</mo><msup><mfenced><mrow><mo>−</mo><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></mfenced><mn>3</mn></msup></math></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>=</mo><msup><mfenced><mrow><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></mfenced><mn>3</mn></msup><mo>&#x22C5;</mo><msup><mfenced><mrow><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></mfenced><mn>5</mn></msup></math>" id="MathJax-Element-148-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2195" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2196" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2197" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2198" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-2199" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2200" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2201" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size1-R, MJXc-TeX-size1-Rw; padding-bottom: 0.626em; padding-top: 0.626em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-2202" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2203" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-2204" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2205" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.588em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2206" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.332em; vertical-align: -0.416em; width: 0px;"></span></span></span><span class="mjx-mo" id="MJXc-Node-2207" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size1-R, MJXc-TeX-size1-Rw; padding-bottom: 0.626em; padding-top: 0.626em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.909em;"><span class="mjx-mn" id="MJXc-Node-2208" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2209" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.003em; white-space: pre;">⋅</span></span><span class="mjx-msup MJXc-space2" id="MJXc-Node-2210" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2211" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2212" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size1-R, MJXc-TeX-size1-Rw; padding-bottom: 0.626em; padding-top: 0.626em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-2213" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2214" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-2215" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2216" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.588em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2217" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.332em; vertical-align: -0.416em; width: 0px;"></span></span></span><span class="mjx-mo" id="MJXc-Node-2218" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size1-R, MJXc-TeX-size1-Rw; padding-bottom: 0.626em; padding-top: 0.626em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.909em;"><span class="mjx-mn" id="MJXc-Node-2219" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">5</span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>=</mo><msup><mfenced><mrow><mo>−</mo><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></mfenced><mn>3</mn></msup><mo>⋅</mo><msup><mfenced><mrow><mo>−</mo><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></mfenced><mn>5</mn></msup></math></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>=</mo><msup><mfenced><mrow><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></mfenced><mrow><mn>5</mn><mo>+</mo><mn>3</mn></mrow></msup></math>" id="MathJax-Element-149-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2220" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2221" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2222" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2223" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-2224" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2225" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2226" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size1-R, MJXc-TeX-size1-Rw; padding-bottom: 0.626em; padding-top: 0.626em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-2227" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2228" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-2229" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2230" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.588em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2231" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.332em; vertical-align: -0.416em; width: 0px;"></span></span></span><span class="mjx-mo" id="MJXc-Node-2232" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size1-R, MJXc-TeX-size1-Rw; padding-bottom: 0.626em; padding-top: 0.626em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.909em;"><span class="mjx-mrow" id="MJXc-Node-2233" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mn" id="MJXc-Node-2234" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">5</span></span><span class="mjx-mo" id="MJXc-Node-2235" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">+</span></span><span class="mjx-mn" id="MJXc-Node-2236" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>=</mo><msup><mfenced><mrow><mo>−</mo><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></mfenced><mrow><mn>5</mn><mo>+</mo><mn>3</mn></mrow></msup></math></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>=</mo><msup><mfenced><mrow><mo>&#x2212;</mo><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></mfenced><mn>8</mn></msup><mo>=</mo><mfrac><mn>1</mn><mn>256</mn></mfrac></math>" id="MathJax-Element-150-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2237" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2238" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2239" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2240" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-2241" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2242" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2243" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size1-R, MJXc-TeX-size1-Rw; padding-bottom: 0.626em; padding-top: 0.626em; white-space: pre;">(</span></span><span class="mjx-mrow" id="MJXc-Node-2244" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2245" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mfrac" id="MJXc-Node-2246" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2247" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.588em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2248" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.332em; vertical-align: -0.416em; width: 0px;"></span></span></span><span class="mjx-mo" id="MJXc-Node-2249" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size1-R, MJXc-TeX-size1-Rw; padding-bottom: 0.626em; padding-top: 0.626em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.909em;"><span class="mjx-mn" id="MJXc-Node-2250" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">8</span></span></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2251" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mfrac MJXc-space3" id="MJXc-Node-2252" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.202em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-2253" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-2254" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">256</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.202em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.348em; vertical-align: -0.432em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>=</mo><msup><mfenced><mrow><mo>−</mo><mfrac><mn>1</mn><mn>2</mn></mfrac></mrow></mfenced><mn>8</mn></msup><mo>=</mo><mfrac><mn>1</mn><mn>256</mn></mfrac></math></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">Vậy <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>=</mo><mfrac><mn>1</mn><mn>256</mn></mfrac></math>" id="MathJax-Element-151-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2255" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2256" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2257" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2258" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mfrac MJXc-space3" id="MJXc-Node-2259" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 1.202em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.296em; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-2260" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">1</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 1.7em;"><span class="mjx-mn" id="MJXc-Node-2261" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">256</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 1.202em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.348em; vertical-align: -0.432em; width: 0px;"></span></span></span></span></span></p></span> </div> </div></div> </div><div class="separator" style="clear: both;"><br /><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span style="box-sizing: border-box; font-weight: 700;">Câu 30. </span>Tìm x, biết <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>&#x22C5;</mo><msup><mfenced><mfrac><mn>3</mn><mn>5</mn></mfrac></mfenced><mn>8</mn></msup><mo>=</mo><msup><mfenced><mfrac><mn>3</mn><mn>5</mn></mfrac></mfenced><mn>10</mn></msup></math>" id="MathJax-Element-152-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2262" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2263" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2264" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2265" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.002em; white-space: pre;">⋅</span></span><span class="mjx-msup MJXc-space2" id="MJXc-Node-2266" style="box-sizing: content-box; display: inline-block; margin-left: 0.222em;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2267" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2268" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" face="MJXc-TeX-size1-R, MJXc-TeX-size1-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.645em; padding-top: 0.645em; white-space: pre;">(</span></span><span class="mjx-mfrac" id="MJXc-Node-2269" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.297em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2270" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">3</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2271" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">5</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.335em; vertical-align: -0.418em; width: 0px;"></span></span><span class="mjx-mo" id="MJXc-Node-2272" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" face="MJXc-TeX-size1-R, MJXc-TeX-size1-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.645em; padding-top: 0.645em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 15.3985px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.911em;"><span class="mjx-mn" id="MJXc-Node-2273" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">8</span></span></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2274" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.094em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-2275" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2276" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2277" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" face="MJXc-TeX-size1-R, MJXc-TeX-size1-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.645em; padding-top: 0.645em; white-space: pre;">(</span></span><span class="mjx-mfrac" id="MJXc-Node-2278" style="box-sizing: content-box; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.297em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2279" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">3</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2280" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">5</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.335em; vertical-align: -0.418em; width: 0px;"></span></span><span class="mjx-mo" id="MJXc-Node-2281" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-size1-R" face="MJXc-TeX-size1-R, MJXc-TeX-size1-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.645em; padding-top: 0.645em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box; display: inline-block; font-size: 15.3985px; padding-left: 0px; padding-right: 0.071em; vertical-align: 0.911em;"><span class="mjx-mn" id="MJXc-Node-2282" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">10</span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>⋅</mo><msup><mfenced><mfrac><mn>3</mn><mn>5</mn></mfrac></mfenced><mn>8</mn></msup><mo>=</mo><msup><mfenced><mfrac><mn>3</mn><mn>5</mn></mfrac></mfenced><mn>10</mn></msup></math></span></span></p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">A. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>=</mo><mfrac><mn>25</mn><mn>9</mn></mfrac></math>" id="MathJax-Element-153-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2283" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2284" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2285" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2286" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.094em; white-space: pre;">=</span></span><span class="mjx-mfrac MJXc-space3" id="MJXc-Node-2287" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.849em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.298em; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-2288" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">25</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-2289" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">9</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 0.849em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.336em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>=</mo><mfrac><mn>25</mn><mn>9</mn></mfrac></math></span></span>;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">B. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>=</mo><mfrac><mn>3</mn><mn>5</mn></mfrac></math>" id="MathJax-Element-154-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2290" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2291" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2292" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2293" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.094em; white-space: pre;">=</span></span><span class="mjx-mfrac MJXc-space3" id="MJXc-Node-2294" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.297em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2295" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">3</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2296" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">5</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.335em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>=</mo><mfrac><mn>3</mn><mn>5</mn></mfrac></math></span></span>;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">C. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>=</mo><mfrac><mn>9</mn><mn>25</mn></mfrac></math>" id="MathJax-Element-155-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2297" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2298" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2299" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2300" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.094em; white-space: pre;">=</span></span><span class="mjx-mfrac MJXc-space3" id="MJXc-Node-2301" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.849em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.298em; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-2302" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">9</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-2303" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">25</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 0.849em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.336em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>=</mo><mfrac><mn>9</mn><mn>25</mn></mfrac></math></span></span>;</p><p style="box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;">D. <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>=</mo><mfrac><mn>9</mn><mn>5</mn></mfrac></math>" id="MathJax-Element-156-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 21.78px; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2304" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2305" style="box-sizing: content-box; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2306" style="box-sizing: content-box; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" face="MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw" style="box-sizing: content-box; display: block; padding-bottom: 0.278em; padding-top: 0.232em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2307" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.324em; padding-top: 0.094em; white-space: pre;">=</span></span><span class="mjx-mfrac MJXc-space3" id="MJXc-Node-2308" style="box-sizing: content-box; display: inline-block; margin-left: 0.278em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; top: -1.298em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2309" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">9</span></span></span><span class="mjx-denominator" style="bottom: -0.591em; box-sizing: content-box; display: block; font-size: 15.3985px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2310" style="box-sizing: content-box; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" face="MJXc-TeX-main-R, MJXc-TeX-main-Rw" style="box-sizing: content-box; display: block; padding-bottom: 0.37em; padding-top: 0.37em; white-space: pre;">5</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box; display: block; height: 0px; position: absolute; top: -0.28em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box; display: inline-block; height: 1.336em; vertical-align: -0.418em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block; height: 1px; left: 0px; overflow: hidden; padding: 1px 0px 0px; position: absolute; top: 0px; user-select: none; width: 1px;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>=</mo><mfrac><mn>9</mn><mn>5</mn></mfrac></math></span></span>.</p></div><p><input size="1" type="num" value="" /></p><p><div> <div> <input 1="" onclick="if (this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display != '') { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = '';this.innerText = ''; this.value = 'Ẩn'; } else { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = 'none'; this.innerText = ''; this.value = 'XEM'; }" style="font-size: 8pt; margin: 0px; padding: 1px; width: 30px;" type="button" value="XEM" /> </div> <div> <div style="background: #; border: 1px solid rgb(79, 79, 79); display: none; padding: 4px;"> <span style="font-size: medium;"><p> <span style="background-color: white; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; font-weight: 700; text-align: justify;">Đáp án đúng là: C</span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span style="box-sizing: border-box; font-weight: 700;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>&#x22C5;</mo><msup><mfenced><mfrac><mn>3</mn><mn>5</mn></mfrac></mfenced><mn>8</mn></msup><mo>=</mo><msup><mfenced><mfrac><mn>3</mn><mn>5</mn></mfrac></mfenced><mn>10</mn></msup></math>" id="MathJax-Element-157-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; font-weight: normal; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2311" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2312" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2313" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space2" id="MJXc-Node-2314" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.003em; white-space: pre;">⋅</span></span><span class="mjx-msup MJXc-space2" id="MJXc-Node-2315" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.222em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2316" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2317" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">(</span></span><span class="mjx-mfrac" id="MJXc-Node-2318" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.317em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2319" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2320" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">5</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.432em; width: 0px;"></span></span><span class="mjx-mo" id="MJXc-Node-2321" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 1.276em;"><span class="mjx-mn" id="MJXc-Node-2322" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">8</span></span></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2323" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-2324" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2325" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2326" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">(</span></span><span class="mjx-mfrac" id="MJXc-Node-2327" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.317em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2328" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2329" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">5</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.432em; width: 0px;"></span></span><span class="mjx-mo" id="MJXc-Node-2330" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 1.276em;"><span class="mjx-mn" id="MJXc-Node-2331" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">10</span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>⋅</mo><msup><mfenced><mfrac><mn>3</mn><mn>5</mn></mfrac></mfenced><mn>8</mn></msup><mo>=</mo><msup><mfenced><mfrac><mn>3</mn><mn>5</mn></mfrac></mfenced><mn>10</mn></msup></math></span></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span style="box-sizing: border-box; font-weight: 700;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>=</mo><msup><mfenced><mfrac><mn>3</mn><mn>5</mn></mfrac></mfenced><mn>10</mn></msup><mo>:</mo><msup><mfenced><mfrac><mn>3</mn><mn>5</mn></mfrac></mfenced><mn>8</mn></msup></math>" id="MathJax-Element-158-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; font-weight: normal; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2332" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2333" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2334" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2335" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-2336" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2337" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2338" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">(</span></span><span class="mjx-mfrac" id="MJXc-Node-2339" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.317em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2340" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2341" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">5</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.432em; width: 0px;"></span></span><span class="mjx-mo" id="MJXc-Node-2342" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 1.276em;"><span class="mjx-mn" id="MJXc-Node-2343" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">10</span></span></span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2344" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.158em; white-space: pre;">:</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-2345" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2346" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2347" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">(</span></span><span class="mjx-mfrac" id="MJXc-Node-2348" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.317em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2349" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2350" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">5</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.432em; width: 0px;"></span></span><span class="mjx-mo" id="MJXc-Node-2351" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 1.276em;"><span class="mjx-mn" id="MJXc-Node-2352" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">8</span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>=</mo><msup><mfenced><mfrac><mn>3</mn><mn>5</mn></mfrac></mfenced><mn>10</mn></msup><mo>:</mo><msup><mfenced><mfrac><mn>3</mn><mn>5</mn></mfrac></mfenced><mn>8</mn></msup></math></span></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span style="box-sizing: border-box; font-weight: 700;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>=</mo><msup><mfenced><mfrac><mn>3</mn><mn>5</mn></mfrac></mfenced><mrow><mn>10</mn><mo>&#x2212;</mo><mn>8</mn></mrow></msup></math>" id="MathJax-Element-159-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; font-weight: normal; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2353" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2354" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2355" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2356" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-2357" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2358" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2359" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">(</span></span><span class="mjx-mfrac" id="MJXc-Node-2360" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.317em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2361" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2362" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">5</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.432em; width: 0px;"></span></span><span class="mjx-mo" id="MJXc-Node-2363" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 1.276em;"><span class="mjx-mrow" id="MJXc-Node-2364" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mn" id="MJXc-Node-2365" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">10</span></span><span class="mjx-mo" id="MJXc-Node-2366" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.418em; padding-top: 0.314em; white-space: pre;">−</span></span><span class="mjx-mn" id="MJXc-Node-2367" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">8</span></span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>=</mo><msup><mfenced><mfrac><mn>3</mn><mn>5</mn></mfrac></mfenced><mrow><mn>10</mn><mo>−</mo><mn>8</mn></mrow></msup></math></span></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span style="box-sizing: border-box; font-weight: 700;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>=</mo><msup><mfenced><mfrac><mn>3</mn><mn>5</mn></mfrac></mfenced><mn>2</mn></msup></math>" id="MathJax-Element-160-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; font-weight: normal; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2368" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2369" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2370" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2371" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-msup MJXc-space3" id="MJXc-Node-2372" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-base" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mfenced" id="MJXc-Node-2373" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mo" id="MJXc-Node-2374" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">(</span></span><span class="mjx-mfrac" id="MJXc-Node-2375" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.495em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.317em; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2376" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">3</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 0.7em;"><span class="mjx-mn" id="MJXc-Node-2377" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">5</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.495em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.432em; width: 0px;"></span></span><span class="mjx-mo" id="MJXc-Node-2378" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-size2-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-size2-R, MJXc-TeX-size2-Rw; padding-bottom: 0.937em; padding-top: 0.937em; white-space: pre;">)</span></span></span></span><span class="mjx-sup" style="box-sizing: content-box !important; display: inline-block; font-size: 13.6168px; padding-left: 0px; padding-right: 0.071em; vertical-align: 1.276em;"><span class="mjx-mn" id="MJXc-Node-2379" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">2</span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>=</mo><msup><mfenced><mfrac><mn>3</mn><mn>5</mn></mfrac></mfenced><mn>2</mn></msup></math></span></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span style="box-sizing: border-box; font-weight: 700;"><span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>=</mo><mfrac><mn>9</mn><mn>25</mn></mfrac></math>" id="MathJax-Element-161-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; font-weight: normal; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2380" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2381" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2382" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2383" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mfrac MJXc-space3" id="MJXc-Node-2384" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.849em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.318em; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-2385" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">9</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-2386" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">25</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.849em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.432em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>=</mo><mfrac><mn>9</mn><mn>25</mn></mfrac></math></span></span></span></p><p style="background-color: white; box-sizing: border-box; font-family: "Open Sans", Arial, sans-serif; font-size: 18px; line-height: 24px; margin: 0px 0.2em 1em; overflow-wrap: break-word; padding: 0px; text-align: justify;"><span style="box-sizing: border-box; font-weight: 700;">Vậy <span class="mjx-chtml MathJax_CHTML" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>=</mo><mfrac><mn>9</mn><mn>25</mn></mfrac></math>" id="MathJax-Element-162-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline-block; float: none; font-size: 19.26px; font-weight: normal; line-height: 0; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 1px 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><span aria-hidden="true" class="mjx-math" id="MJXc-Node-2387" style="border-collapse: separate; border-spacing: 0px; box-sizing: border-box; display: inline-block;"><span class="mjx-mrow" id="MJXc-Node-2388" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-mi" id="MJXc-Node-2389" style="box-sizing: content-box !important; display: inline-block;"><span class="mjx-char MJXc-TeX-math-I" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-math-I, MJXc-TeX-math-Ix, MJXc-TeX-math-Iw; padding-bottom: 0.314em; padding-top: 0.21em; white-space: pre;">x</span></span><span class="mjx-mo MJXc-space3" id="MJXc-Node-2390" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.314em; padding-top: 0.106em; white-space: pre;">=</span></span><span class="mjx-mfrac MJXc-space3" id="MJXc-Node-2391" style="box-sizing: content-box !important; display: inline-block; margin-left: 0.278em;"><span class="mjx-box MJXc-stacked" style="box-sizing: content-box !important; display: inline-block; height: 0px; padding: 0px 0.12em; position: relative; width: 0.849em;"><span class="mjx-numerator" style="box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; top: -1.318em; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-2392" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">9</span></span></span><span class="mjx-denominator" style="bottom: -0.61em; box-sizing: content-box !important; display: block; font-size: 13.6168px; position: absolute; text-align: center; width: 1.2em;"><span class="mjx-mn" id="MJXc-Node-2393" style="box-sizing: content-box !important; display: inline-block; text-align: left;"><span class="mjx-char MJXc-TeX-main-R" style="box-sizing: content-box !important; display: block; font-family: MJXc-TeX-main-R, MJXc-TeX-main-Rw; padding-bottom: 0.366em; padding-top: 0.366em; white-space: pre;">25</span></span></span><span class="mjx-line" style="border-bottom: 1.3px solid; box-sizing: content-box !important; display: block; height: 0px; position: absolute; top: -0.282em; width: 0.849em;"></span></span><span class="mjx-vsize" style="box-sizing: content-box !important; display: inline-block; height: 1.363em; vertical-align: -0.432em; width: 0px;"></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px !important; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: block !important; height: 1px !important; left: 0px; overflow: hidden !important; padding: 1px 0px 0px !important; position: absolute !important; top: 0px; user-select: none; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>�</mi><mo>=</mo><mfrac><mn>9</mn><mn>25</mn></mfrac></math></span></span>.</span></p></span> </div> </div></div> </p><p><br /></p>

trắc nghiệm 2

  Câu 21.  So sánh đúng là A.  2020 2021 > 2021 2022 2020 2021 > 2021 2022 ; B.  2020 2021 = 2021 2022 2020 2021 = 2021 2022 ; C.  202...

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