LZ逗人玩的么?
(x^2+y^2+2xy)(x^2+y^2-2xy)/(x-y)(x+y)
=(x+y)^2(x-y)^2/(x-y)(x+y)
=(x+y)(x-y)
这个分式还能不能化简通分?(x^2+y^2+2xy)(x^2+y^2-2xy)/(x-y)(x+y)一道题目我已经化简通
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