Bài 10: Chia Đơn Thức Cho Đơn Thức
Hướng dẫn giải Bài 59 (Trang 26 SGK Toán Đại số 8, Tập 1)
<p>Làm tính chia</p>
<p><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>a</mi><mo>.</mo><mo> </mo><msup><mn>5</mn><mn>3</mn></msup><mo> </mo><mo>:</mo><mo> </mo><msup><mrow><mo>(</mo><mo>−</mo><mn>5</mn><mo>)</mo></mrow><mrow><mn>2</mn><mo>;</mo></mrow></msup><mo> </mo><mspace linebreak="newline"/><mi>b</mi><mo>.</mo><mo> </mo><msup><mfenced><mfrac><mn>3</mn><mn>4</mn></mfrac></mfenced><mn>5</mn></msup><mo> </mo><mo>:</mo><mo> </mo><msup><mfenced><mfrac><mn>3</mn><mn>4</mn></mfrac></mfenced><mn>3</mn></msup><mo>;</mo><mspace linebreak="newline"/><mi>c</mi><mo>.</mo><mo> </mo><msup><mfenced><mrow><mo>-</mo><mn>12</mn></mrow></mfenced><mn>3</mn></msup><mo> </mo><mo>:</mo><mo> </mo><msup><mn>8</mn><mn>3</mn></msup><mo>;</mo></math></p>
<p><strong>Giải:</strong></p>
<p><strong><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>a</mi><mo>.</mo><mo> </mo><msup><mn>5</mn><mn>3</mn></msup><mo> </mo><mo>:</mo><mo> </mo><msup><mrow><mo>(</mo><mo>−</mo><mn>5</mn><mo>)</mo></mrow><mn>2</mn></msup><mo>=</mo><msup><mn>5</mn><mn>3</mn></msup><mo> </mo><mo>:</mo><mo> </mo><msup><mn>5</mn><mn>2</mn></msup><mo>=</mo><msup><mn>5</mn><mrow><mn>3</mn><mo>-</mo><mn>2</mn></mrow></msup><mo>=</mo><mn>5</mn></math></strong></p>
<p><strong><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>b</mi><mo>.</mo><mo> </mo><msup><mfenced><mfrac><mn>3</mn><mn>4</mn></mfrac></mfenced><mn>5</mn></msup><mo> </mo><mo>:</mo><mo> </mo><msup><mfenced><mfrac><mn>3</mn><mn>4</mn></mfrac></mfenced><mn>3</mn></msup><mo>=</mo><mo> </mo><msup><mfenced><mfrac><mn>3</mn><mn>4</mn></mfrac></mfenced><mrow><mn>5</mn><mo>-</mo><mn>3</mn></mrow></msup><mo>=</mo><msup><mfenced><mfrac><mn>3</mn><mn>4</mn></mfrac></mfenced><mn>2</mn></msup><mo>=</mo><mfrac><mn>9</mn><mn>16</mn></mfrac></math></strong></p>
<p><strong><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>c</mi><mo>.</mo><mo> </mo><msup><mfenced><mrow><mo>-</mo><mn>12</mn></mrow></mfenced><mn>3</mn></msup><mo> </mo><mo>:</mo><mo> </mo><msup><mn>8</mn><mn>3</mn></msup><mo>=</mo><mo>-</mo><msup><mn>12</mn><mn>3</mn></msup><mo> </mo><mo>:</mo><mo> </mo><msup><mn>8</mn><mn>3</mn></msup><mo>=</mo><msup><mfenced><mrow><mo>-</mo><mn>4</mn><mo> </mo><mo>.</mo><mo> </mo><mn>3</mn></mrow></mfenced><mn>3</mn></msup><mo> </mo><mo>:</mo><mo> </mo><msup><mfenced><mrow><mn>4</mn><mo> </mo><mo>.</mo><mo> </mo><mn>2</mn></mrow></mfenced><mn>3</mn></msup><mo>=</mo><msup><mfenced><mfrac><mrow><mo>-</mo><mn>4</mn><mo>.</mo><mn>3</mn></mrow><mrow><mn>4</mn><mo>.</mo><mn>2</mn></mrow></mfrac></mfenced><mn>3</mn></msup><mo>=</mo><msup><mfenced><mrow><mo>-</mo><mfrac><mn>3</mn><mn>2</mn></mfrac></mrow></mfenced><mn>3</mn></msup><mo>=</mo><mo>-</mo><mfrac><mn>27</mn><mn>8</mn></mfrac></math></strong></p>
Hướng dẫn Giải Bài 59 (Trang 26, SGK Toán 8, Tập 1)
GV: 
GV colearn
GV colearn
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Hướng dẫn Giải Bài 59 (Trang 26, SGK Toán 8, Tập 1)
GV: GV colearn
GV colearn