计算 [2x²-(x-y)(x+y)][(2-x)(2+x)+(y-2)(y+2)]

计算:(x-y)^2*(y-x)^2*(x-y)^6 计算(x+y)(x+y)^2(-x-y)^3 有这样一道题:"计算(2*x*x*x-3*x*x*y-2*x*y*y)-(x*x*x-2*x*y*y+y*y*y)+【- 计算:(-x-2y) * (3x-y) 计算(x²/x+2y)-x+2y-2 1、x(x-y)(x+y)-x(x+y)^2 (1)(x^2/x)-y-x-y 计算2x/x^2-y^2 3x/y^2-x^2 y/(x y)(y-x)快! 【(x-y)^2+(x+y)(x-y)】除以 2x (2x-y)²-4(x-y)(x+2y) 化简：（2x-y)²-4(x-y)(x+y) 计算【3(x-y)^2(x+y)^-2/4(x+y)^2(x-y)^-2】^-2