作业帮x^3+3x-4,4x^2+2x-y-y^2,x^3-y^3-x^2y+xy^2.求分组分解法分解因式
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x^3+3x-4,4x^2+2x-y-y^2,x^3-y^3-x^2y+xy^2.求分组分解法分解因式
x^3+3x-4,4x^2+2x-y-y^2,x^3-y^3-x^2y+xy^2.求分组分解法分解因式
x^3+3x-4,4x^2+2x-y-y^2,x^3-y^3-x^2y+xy^2.求分组分解法分解因式
x^3+3x-4
=x^3 + (x^2 - x^2) + (4 x - x) - 4
=x^3 + x^2 + 4 x - x^2 - x - 4
= (x^2 + x + 4) x - (x^2 + x + 4)
= (x^2 + x + 4)(x -1)
4 x^2 + 2 x - y - y^2
=4 x^2 - y^2 +(2 x - y)
=(2 x + y)(2 x - y)+(2 x - y)
=(2 x + y + 1)(2 x - y)
x^3 - y^3 - x^2 y + x y^2
=(x - y) (x^2 + x y + y^2) - x (x - y) y
=(x - y) (x^2 + y^2)
(x-y) (x-2y)+(x+2y) (x-3y)-2(x-3y) (x-4y)=
x²/xy-x/y 3x/4x+y - x-2y/4x+y (1-y/y+x)÷x/y²-x²
(x+3y-4)(2x-y)
计算（2x-3y)(x+4y)-(3x+y)(x-2y)（2x-3y)(x+4y)-(3x+y)(x-2y)
因式分解(x-2y)(x-3y)+(x-4y)(x-5y)+（x-3y)(x-5y)+(x-2y)(x-4y)
(2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y)
(2x-y)(2x+y)-2(3x-4y)(4y+3x)
(3x-y)(y+3x)-2(4x-3y)(4x+3y)
4x*3-4x*2y-(x-y)因式分解
化简：2x-{-3y+[4x-(3x-y]}
x^4+x^3y+x^2*y^2+y^3x+y^4分解因式
(x-3y)(y+2x)-(4y-3x)(3x+4y)计算
5/4(x+y)(-x-y)^3*[-4/3(x-y)]*[-3/5(y-x)^2]
x^3+2x^2y-4x-8y
2x-{-3y+[4x-(2y-x)]}
2（x+y)-3(x-y)=3 ,4(x+y)+3(x-y)=15
5x^3y(x-y)^3-10x^4y^3(y-x)^2因式分解
5x^3y(x-y)^3-10x^4y^3(y-x)^2