(x-y)³(x-y)²(y-x)等于多少

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(x-y)³(x-y)²(y-x)等于多少
(x-y)³(x-y)²(y-x)等于多少

(x-y)³(x-y)²(y-x)等于多少
(x-y)³(x-y)²(y-x)
=-(x-y)³(x-y)²(x-y)
=-(x-y)³+2+1
=-(x-y)^6