（x-y)2•(y-x)³(x-y)=?

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（x-y)2•(y-x)³(x-y)=?
（x-y)2•(y-x)³(x-y)=?

（x-y)2•(y-x)³(x-y)=?
答：
（x-y)2•(y-x)³(x-y)=
=(x-y)²×(y-x)³(x-y)
=(x-y)³×(y-x)³
=-(x-y)^6

（x-y)²•(y-x)³(x-y)
=-（x-y)²•(x-y)³(x-y)
=-（x-y)²+³+¹
=-(x-y)⁶