问题 解答题

化简:[12(x+y)3(y-x)]3÷[4(x+y)2(x-y)]2

答案

[12(x+y)3(y-x)]3÷[4(x+y)2(x-y)]2

=123(x+y)9(y-x)3÷[16(x+y)4(x-y)2],

=-108(x+y)5(x-y).

=108(x+y)5(y-x).

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