化简(x+y)²-(x-y)²

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化简(x+y)²-(x-y)²
化简(x+y)²-(x-y)²

化简(x+y)²-(x-y)²
(x+y)²-(x-y)²
=(x+y+x-y)(x+y-x+y)
=2x(2y)
=4xy

4xy
望采纳

(x+y)²-(x-y)²=4xy