【(x^2+y^2)-(x-y)^2+2y(x-y)】÷4y=1,(x²+y²-x²-y²+2xy+2xy-2y²)÷4y=14xy-2y²=4y4x-2y=42x-y=24x/(4x^2×y^2)-1/(2x+y) 题目可能打错了,你检查一下.如下题目如下:4x/(4x^2-y^2)-1/(...
已知:【(x^2+y^2)-(x-y)^2+2y(x-y)】÷4y=1,求4x/(4x^2×y^2)-1/(2x+y)的
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