x^2-9y^2-2x+6y
化简:x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y)
计算:(x-y)^2*(y-x)^2*(x-y)^6
6(x+y)2-2(x-y)(x+y)因式分解
1、x(x-y)(x+y)-x(x+y)^2
因式分解3x^2(x-y)+6x(y-x)
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
9xy(x-y)(x+1)-3y(x-y)(3x+2y)+6y的平方(x-y)(x+1),因式分解
因式分解 (1)6(x-y)^3-3y(y-x)^2 (2)x(x-y)(a-b)-y(y-x)(
(1)(x^2/x)-y-x-y
【(x-y)^2+(x+y)(x-y)】除以 2x
计算:(2/3x√9x+6x√y/x)+(y√x/y-√1/x)
2(2x+3y)(3x+2y)-(6x-y)(2x-5y)