(x-y)³(x-y)²(y-x)怎么算?详细解题过程,谢谢.
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(x-y)³(x-y)²(y-x)怎么算?详细解题过程,谢谢.
(x-y)³(x-y)²(y-x)怎么算?详细解题过程,谢谢.
(x-y)³(x-y)²(y-x)怎么算?详细解题过程,谢谢.
(x-y)³(x-y)²(y-x)
=-(x-y)³(x-y)²(x-y)
=-(x-y)^(3+2+1)
=-(x-y)^6
(x-y)² =(y-x)²
所以 原式=(x-y)³(y-x)²(y-x)
=(x-y)³(y-x)³
= -(x-y)6次方