Question

在作业中遇到多项式除以多项式的竖式除法,

Answer 1

.x^3 -2x -1

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2x^2-1 | 2x^5 -5x^3-2x^2+2x+1

| 2x^5 - x^3

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-4x^3-2x^2+2x+1

-4x^3 +2x

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-2x^2+ 1

-2x^2+ 1

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0

因此：（2x^5+0x^4-5x^3-2x^2+2x+1)/(2x^2+0x-1) = (x^3 - 2x - 1)