[(2x-y)(2x+y)+y(y-6x)]÷2x=?

【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y) x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 化简y(x+y)+(x+y)(x-y)-x^2 (x+y)(x-y)-(x-y)^2如题 (x+y)(x-y)-(x-y)^2 计算:(x-y)^2*(y-x)^2*(x-y)^6 6(x+y)2-2(x-y)(x+y)因式分解 [(x-y)^2-(x+2y)(x-2y)]/y 因式分解x(x+y)(x-y)-x(x+y)^2 计算:y-x分之x+y+x-y分之y-y-x分之2x-y (x+y)^2+6(x+y)+9 [2(x-y)^5-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2[2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2 3y/x*x-y*y+x/x*x-2xy+y*y+6y*y/x*x*x-x*x*y-xy*y+y*y*y等于多少? 【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2= 化简：[(x+y)(x-y)(x+y)^2-2y(x-2y)](-2y) 谢谢! 计算：[(x+y)(x-y)-(x-y)^2+2y(x-y)]/(-2y) [(-x-y)(-x+y)-(x+y)^2-x(y-y^2)}÷1/2y [(2x+y)平方+(2x+y)(y-2x)-6y]/(2y) [(x+y)(x-y)-(x-y)²+2y(x-y)]÷4y