1、x(x-y)(x+y)-x(x+y)^22、（2a+b)(2a-3b)-3a(2a+b)

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1、x(x-y)(x+y)-x(x+y)^22、（2a+b)(2a-3b)-3a(2a+b)
1、x(x-y)(x+y)-x(x+y)^2
2、（2a+b)(2a-3b)-3a(2a+b)

1、x(x-y)(x+y)-x(x+y)^22、（2a+b)(2a-3b)-3a(2a+b)
1) x(x-y)(x+y)-x(x+y)^2
=x((x-y)(x+y)-(x+y)^2)
=x(x^2-y^2-x^2-2xy-y^2)
=x(-2xy-2y^2)
=-2xy(x+y)
2) （2a+b)(2a-3b)-3a(2a+b)
=(2a+b)(2a-3b-3a)
=(2a+b)(-a-3b)
=-(2a+b)(a+3b)

{(x,y) |x|+|y| x>y?x:y (x+y)(x-y)+4(y-1) x^/y-x-y^/y-x化简. 化简x(y-x)-y(x-y) 行列式计算 x y x+y y x+y x x+y x y|x y x+y ||y x+y x ||x+y x y | y/(x+y)-x/(x-y) x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 因式分解x(x+y)(x-y)-x(x+y)^2 x(x+y)(x-y)-x(x+y)的平方 x(x+y)(x-y)-x(x+y)² 因式分解 x y x+yy x+y xx+y x y (3x-y)(3y+x)-(x-y)(x+y) 化简x/y(x+y)-y/x(x+y) 化简 x / y(x+y) - y / x(x+y) = 化简:(x+ y)(x-y) +(x+ y) +(x-y) x+y (x+y)