x的立方-2x的平方（y-8)+x（y-8）的平方```因式分解
人气：294 ℃ 时间：2019-11-07 07:38:25
解答
x^3-2x^2(y-8)+x(y-8)^2
=x[x^2-2x(y-8)+(y-8)^2]
=x[x-(y-8)]^2
=x(x-y+8)^2
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