[2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2]/2(x-y)^2的解题过程是什么

[2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2]/2(x-y)^2的解题过程是什么 【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2= 1、x(x-y)(x+y)-x(x+y)^2 1.（（y+2x)(-2x+y)+4(x+2y)^2)/3y 2.（2(x-y)^3-8(x-y）^2(x+y)+6y( 2(y-x)的平方-7(x-y)+6(x-y)-3(y-x)的平方 化简:(x-3y)(x+y)-(x-2y)(x+2y)-(x-y)平方 【x-3y][x+y]-[x-2y][x +2y]-[x-y [(3x+y)(x-y)-(2x+3y)(x-y)]*(x-y) x^8-x^7y+x^6y^2-x^5y^3+x^4y^4-x^3y^5+x^2y^-xy^7+y^8 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)+【- (3x+y)二次方-3(3x-y)(x+y)-(x-2y)(x+3y)要过程! 因式分解 (1)6(x-y)^3-3y(y-x)^2 (2)x(x-y)(a-b)-y(y-x)(