(-a^2-1/2b)^2 (-3x-2y)(3x+2y) (2a-b )^2-4(b^2-ab)
分解公因式的题 x(a-x)(a-y)-y(x-a)(y-a)-ab(a-b)^2+a(b-a)^2a^3b-ab2ab
几道因式分解..4ab(a+b)^2-6a^2b(a+b)(x+y)^2(x-y)+(x+y)(x-y)^22a(a-3
把(a+b)和(x+y)各看成一项,合并同类项:(1)4(a+b)+2(a+b)-(a+b); (2)3(x-y)^2-
因式分解:x^2y^2-4x a(a-b)-2b(b-a)
x²(x+y)(y-x)-xy(x+y)(x-y) 已知a+b=4,ab=-2,求多项式3a²b+3
(3a+b)(3a-b) (-1/2a-b) (3y+2x)^2 (3ab+2b)^2 -8a^4b^/6ab^2 (3
①[(x+y)^2-(x+y)(x-y)]/2y②(-1/3a^3b^2)^2(-2ab^2)^3/(1/9a^4b^4
3a(x+y)-2b(x+y)=(x+y)(?)
1)已知4X=5y,求(X+y):y 2)已知(a-b):(a+b)=3:7,求a:b
已知|x-y-3|+(a+b+4)²=0,求2a+2b-(a+b)分之(x-y)²-3(y-x)的值
计算:(1) (2x-3y)+(5x+4y) (2) (8a-7b)-(4a-5b)
计算:(2a-5b)(2a^2-3ab+b^2) (3x+2y)(2x+3y)-(x-3y)(3x+4y)