问题 填空题

因式分x2(x-y)-y2(x-y)=______.

答案

x2(x-y)-y2(x-y)

=(x-y)(x2-y2

=(x-y)(x+y)(x-y)

=(x-y)2(x+y).

故答案为:(x-y)2(x+y).

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