x^2-y^2/(x-y)^2怎么约分
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x^2-y^2/(x-y)^2怎么约分x^2-y^2/(x-y)^2怎么约分x^2-y^2/(x-y)^2怎么约分x^2-y^2/(x-y)^2=(x-y)(x+y)/(x-y)^2=(x+y)/(x
x^2-y^2/(x-y)^2怎么约分
x^2-y^2/(x-y)^2怎么约分
x^2-y^2/(x-y)^2怎么约分
x^2-y^2/(x-y)^2
=(x-y)(x+y)/(x-y)^2
=(x+y)/(x-y)
x^2-y^2/(x-y)^2怎么约分
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