Hướng dẫn giải Bài 67 (Trang 31 SGK Toán Đại số 8, Tập 1)

Sắp xếp các đa thức theo lũy thừa giảm dần của biến rồi làm phép chia: <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>a</mi><mo>)</mo><mo> </mo><mo>(</mo><msup><mi>x</mi><mn>3</mn></msup><mo> </mo><mo>–</mo><mo> </mo><mn>7</mn><mi>x</mi><mo> </mo><mo>+</mo><mo> </mo><mn>3</mn><mo> </mo><mo>–</mo><mo> </mo><msup><mi>x</mi><mn>2</mn></msup><mo>)</mo><mo> </mo><mo>:</mo><mo> </mo><mo>(</mo><mi>x</mi><mo> </mo><mo>–</mo><mo> </mo><mn>3</mn><mo>)</mo><mo>;</mo><mo> </mo><mspace linebreak="newline"/><mi>b</mi><mo>)</mo><mo> </mo><mo>(</mo><mn>2</mn><msup><mi>x</mi><mn>4</mn></msup><mo> </mo><mo>–</mo><mo> </mo><mn>3</mn><msup><mi>x</mi><mn>2</mn></msup><mo> </mo><mo>–</mo><mo> </mo><mn>3</mn><msup><mi>x</mi><mn>2</mn></msup><mo> </mo><mo>–</mo><mo> </mo><mn>2</mn><mo> </mo><mo>+</mo><mo> </mo><mn>6</mn><mi>x</mi><mo>)</mo><mo> </mo><mo>:</mo><mo> </mo><mo>(</mo><msup><mi>x</mi><mn>2</mn></msup><mo> </mo><mo>–</mo><mo> </mo><mn>2</mn><mo>)</mo><mo>;</mo></math> Giải: <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>a</mi><mo>)</mo><mo> </mo><mo>(</mo><msup><mi>x</mi><mn>3</mn></msup><mo> </mo><mo>–</mo><mo> </mo><mn>7</mn><mi>x</mi><mo> </mo><mo>+</mo><mo> </mo><mn>3</mn><mo> </mo><mo>–</mo><mo> </mo><msup><mi>x</mi><mn>2</mn></msup><mo>)</mo><mo> </mo><mo>:</mo><mo> </mo><mo>(</mo><mi>x</mi><mo> </mo><mo>–</mo><mo> </mo><mn>3</mn><mo>)</mo></math> <img class="wscnph" src="data:image/png;base64,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" width="206" height="111" /> <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>V</mi><mi>ậ</mi><mi>y</mi><mo> </mo><mo>(</mo><msup><mi>x</mi><mn>3</mn></msup><mo> </mo><mo>–</mo><mo> </mo><mn>7</mn><mi>x</mi><mo> </mo><mo>+</mo><mo> </mo><mn>3</mn><mo> </mo><mo>–</mo><mo> </mo><msup><mi>x</mi><mn>2</mn></msup><mo>)</mo><mo> </mo><mo>:</mo><mo> </mo><mo>(</mo><mi>x</mi><mo> </mo><mo>–</mo><mo> </mo><mn>3</mn><mo>)</mo><mo> </mo><mo>=</mo><mo> </mo><msup><mi>x</mi><mn>2</mn></msup><mo> </mo><mo>+</mo><mo> </mo><mn>2</mn><mi>x</mi><mo> </mo><mo>-</mo><mo> </mo><mn>1</mn></math> <math 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" 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