计算(x-y)²•(x-y)³•(y-x)²•(y-x)³

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计算(x-y)²•(x-y)³•(y-x)²•(y-x)³
计算(x-y)²•(x-y)³•(y-x)²•(y-x)³

计算(x-y)²•(x-y)³•(y-x)²•(y-x)³
(x-y)²•(x-y)³•(y-x)²•(y-x)³
=(x-y)²•(x-y)³•(x-y)²•[-(x-y)³]
=-(x-y)^(2+3+2+3)
=-(x-y)^10