(x的平方-y的平方)(x-y)的平方-(x-y)的四次方

题目

(x的平方-y的平方)(x-y)的平方-(x-y)的四次方

答案

(x²-y²)(x-y)²-(x-y)的4次方
=(x+y)(x-y)(x-y)²-(x-y)的4次方
=(x+y)(x-y)³-(x-y)的4次方
=[(x+y)-(x-y)](x-y)³
=2y(x-y)³
明白请采纳,
有新问题请求助,