课外题25*(x-y)*(x-y)+10*(y-x)+1
1、x(x-y)(x+y)-x(x+y)^2
{(x,y) |x|+|y|
x>y?x:y
1) (2x+5y)(2x-5y)(-4x^2-25y^2) 2) [(x+y)(x-y)-(x-y)^2+2y(x-y
(1)(x^2/x)-y-x-y
25(x-y)的平方+10(y-x)+1因式分解
因式分解:25(x-y)²+10(y-x)+1
[(-x-y)(-x+y)-(x+y)^2-x(y-y^2)}÷1/2y
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)+【-
(x+y)
X、Y
1.(x-y)(x+y)+(x-y)+(x+y)