(x-y)²(y-x)³等于多少.

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(x-y)²(y-x)³等于多少.(x-y)²(y-x)³等于多少.(x-y)²(y-x)³等于多少.=(x-y)²[-(x-y)

(x-y)²(y-x)³等于多少.
(x-y)²(y-x)³等于多少.

(x-y)²(y-x)³等于多少.
=(x-y)²[-(x-y)³]
=-(x-y)^5