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