化简计算:[x-y+4xy/(x-y)] * [x+y-4xy/(x+y)]

化简计算:[x-y+4xy/(x-y)] * [x+y-4xy/(x+y)] 计算下面式子{x-y+[(4xy)/(x-y)]}{x-y-[(4xy)/(x-y)]} 计算:[x-y+4xy/(x-y)] * [x+y-4xy/(x+y)] 计算：（x-y+4xy/x-y)(x+y-4xy/x+y) (x-y+(4xy/x-y))(x+y-(4xy/x+y)) 分式计算 计算:2xy/(x+y)².(x+y)/4y 计算：(xy-x²)×x-y/xy 数学化简计算:(x+y)^2/xy-(x-y)^2/xy 计算(3x-4y)-(3x+4y)-xy 计算：[(x-y)^2-(x+y)^2]/(-4xy)= 整式的乘除,化简计算,1.-4x^3y*(1/2xy^2- 3xy)2.(x-y)^2-x(x-2y) （x^2+xy/x-y)/（xy/x-y)计算 怎么化简（x-y+4xy/x-y）（x+y-4xy/x+y）（/是分数线） 计算:4xy-(x+y)^2/xy(x+y)(x-y)÷x^2+xy-2y^2/x^2y+2xy^2 【因式分解】计算 化简或求值 1.(x^2-y^2)(x^2+xy+y^2) / (x+y)(x^3-y^3)2.(x^2-4x+4)(3-x) / (2x-6)(x^2+x-6)3.已知 x+y=1,xy= -2,求(x^2+y^2+xy) / (x^2+y^2-xy) 的值4.已知（x^2+y^2）（x^2+y^2-1）=12,求x^2+y^2的值 计算或化简：[（x-y）/(x+3y)]÷[（x²-y²）/(x²+6xy+9y²)]-（2y）/x+y x-y/xy-y^2计算 计算:(4xy(x-y)^-1+(x(y^-1)-(x^-1)y)/((x^-1)+(y^-1)))*(x+y)^-2