（x-y)(x-y)2(y-x)

来源：学生作业帮编辑：神马作文网作业帮分类：数学作业时间：2024/11/16 22:47:25

（x-y)(x-y)2(y-x)
(x+2y-?）(x-2y+?)

x^2(x-y)+y^2(y-x)
=x^2(x-y)-y^2(x-y)
=(x-y)(x^2-y^2)
=(x-y)(x-y)(x+y)
=(x-y)^2(x+y)
再问：（x-y)(x-y)2(y-x)中的2平方，？是二分之一急用！谢谢

1、x(x-y)(x+y)-x(x+y)^2 {(x,y) |x|+|y| x>y?x:y (1)(x^2/x)-y-x-y 【(x-y)^2+(x+y)(x-y)】除以 2x [(-x-y)(-x+y)-(x+y)^2-x(y-y^2)}÷1/2y x^2-y^2/x+y-4x(x-y)+y^2/2x-y, (x+y)^2(x-y)^2-(x-y)(x+y)(x^2+y^2)分解因式化简:(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) 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)+【-