1.x^2+x-4y^2-2y 2.(x^2+3x-2)(x^2+3x+4)-16
x/x-y*y^2/x+y-x^3y2/x^4-y^4/x^2/x^2+y^2
1.((y+2x)(-2x+y)+4(x+2y)^2)/3y 2.(2(x-y)^3-8(x-y)^2(x+y)+6y(
(x+3y-4)(2x-y)
1.(2x-y)(4x^2-y^2)(2x+y) 2.(1+x)(1-x)(1+x^2)(a+x^4) 3.方程(x+3
计算 1.(-2x)^3-3x乘(x-2x^2) 2.【(x+2y)^2-(x-2y)(x+2y)】÷4y
数学题……555{(3x+y)(3x-y)-(x-5y)(5x-y)-(x-2y)²÷(-4x),x=-2.y
4x*3-4x*2y-(x-y)因式分解
4x^3-4x^2y-(x-y)因式分解
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)^3]^6-3[(x+y)^3]^6X(x+y)^4X(-x-y)^2
(2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y)
因式分解3x^2(x-y)+6x(y-x)