化简:(x²+y²/x-y)-(2xy/x-y)(写出过程)
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化简:(x²+y²/x-y)-(2xy/x-y)(写出过程)
化简:(x²+y²/x-y)-(2xy/x-y)
(写出过程)
化简:(x²+y²/x-y)-(2xy/x-y)(写出过程)
=(x^2 - 2xy + y^2) / (x - y) = (x - y)^2 / (x - y) = x - y