约分:x²-y²/(x-y)²写步骤

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约分:x²-y²/(x-y)²写步骤约分:x²-y²/(x-y)²写步骤约分:x²-y²/(x-y)²写步骤x

约分:x²-y²/(x-y)²写步骤
约分:x²-y²/(x-y)²写步骤

约分:x²-y²/(x-y)²写步骤
x²-y²/(x-y)²=(x+y)(x-y)/(x-y)²=(x+y)/(x-y)

(x+y)(x-y)/(x-y)^2
(x+y)/(x-y)
不过前提是x不等于y