16(x-y)^2-25(x+y)^2
(x+y)^2-16(x-y)^2
1、x(x-y)(x+y)-x(x+y)^2
1) (2x+5y)(2x-5y)(-4x^2-25y^2) 2) [(x+y)(x-y)-(x-y)^2+2y(x-y
-16(2x+y)^2+25(x-2y)^2
因式分解16(x+y)^2-25(x-y)^2
25(x+y)^2-16(x-y)^2因式分解
(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