(x+y)^3(x+y)^2-(-x-y)怎么做QUQ
(2x-3y)2-(4y-3x)(3x+4y)怎么做?
[(3x+y)²-(3x-y)²]÷(4x-2y)计算 怎么做?
(x^2-xy)y÷y-x/xy怎么做?
(2x+3y)(x-4y)、(5x-y)(-x-3y)、(3-x)(4+y)谁告诉我这类题怎么做呀?
x^4-2x^2y-3y^2+6y-4因式分解怎么做
y=3x平方+2x怎么做啊
(y-x)(x-y)^3(y-x)^5怎么算
有谁知道数学通分X-Y/2X+2Y与XY/(X+Y)怎么做?
[(3x+y)(x-y)-(2x+3y)(x-y)]*(x-y)
化简:(x-3y)(x+y)-(x-2y)(x+2y)-(x-y)平方
【x-3y][x+y]-[x-2y][x +2y]-[x-y
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)+【-