(x+y)2(x-y)+(x+y)(y-x)2.-数学

题目简介

(x+y)2(x-y)+(x+y)(y-x)2.-数学

题目详情

(x+y)2(x-y)+(x+y)(y-x)2
题型:解答题难度:中档来源:不详

答案

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

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