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分到这一步了,

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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分到这一步了,
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分到这一步了,

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分到这一步了,
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)

x^2-y^2

不能了

它是等于(x+y)的3次方与(x-y)的3次方的乘积

(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)
郁闷。。不难吧

可以:
原式=(x+y)^2(x-y)^2/(x+y)(x-y)
=(x+y)(x-y)
=x^2-y^2