x^4-3x^3+x^2 y+2x^2-2xy因式分解
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x^4-3x^3+x^2y+2x^2-2xy因式分解x^4-3x^3+x^2y+2x^2-2xy因式分解x^4-3x^3+x^2y+2x^2-2xy因式分解x[（x^3-3x^2+2x)+(xy-2y
x^4-3x^3+x^2 y+2x^2-2xy因式分解
x^4-3x^3+x^2 y+2x^2-2xy因式分解
x^4-3x^3+x^2 y+2x^2-2xy因式分解
x[（x^3-3x^2+2x)+(xy-2y)]=x[x（x^2-3x+2)+y(x-2)]=x（x-2)[x（x-1)+y]=x（x-2)(x^2-x+y).
[2/3x-2/x+y(x+y/3x-x-y)]/x-y/x
化简：{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x
计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x
化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x
x(x-y)2-(y-x)3
x²/xy-x/y 3x/4x+y - x-2y/4x+y (1-y/y+x)÷x/y²-x²
化简 3x(x^2-x-1)-(x+1)(3x^-x) X^3(x-y)+x(y-x)
(x-y) (x-2y)+(x+2y) (x-3y)-2(x-3y) (x-4y)=
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
(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)
3^x+2x=y,x
因式分解3x^2(x-y)+6x(y-x)
化简x-2y+3x-4x+5x-...+2001x-2002x,急.
x^3+2x^2y-4x-8y
2x-{-3y+[4x-(2y-x)]}
化简：2x-{-3y+[4x-(3x-y]}