-1/3x^3+2/3x^2y-1/3xy^2 因式分解
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-1/3x^3+2/3x^2y-1/3xy^2 因式分解
-1/3x^3+2/3x^2y-1/3xy^2 因式分解
-1/3x^3+2/3x^2y-1/3xy^2 因式分解
-1/3x^3+2/3x^2y-1/3xy^2
=-1/3x(x^2-2xy+y^2)
=-1/3x(x-y)^2
-1/3x^3+2/3x^2y-1/3xy^2 因式分解
=-1/3x(x^2-2xy+y^2)
=-1/3x(x-y)^2
化简 3x(x^2-x-1)-(x+1)(3x^-x) X^3(x-y)+x(y-x)
x²/xy-x/y 3x/4x+y - x-2y/4x+y (1-y/y+x)÷x/y²-x²
计算:1-2x+x^2/x-x^3*xy+x^2y/x-x^2
函数,y=3x/(x^2+x+1) ,x
函数y=3x/(x^2+x+1) (x
若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值
x(x-y)2-(y-x)3
[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
1/(x-y)+1/(x+y)+2x/(x^2+y^2)+4x^3/(x^4+y^4)化简
(3x-y)^2+(3x+y)(3x-y),x=1,y=-2
(x-y)/(x+y)=3求( 3x-2y-1)/(x+y-5)
二元一次方程 :2(x+y)-(x-y)=3 (x+y)-2(x-y)=1
2(x+y)-3(x-y)=1 6(x+y)+(x-y)=51
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
变量x,y满足约束条件,x+y>=3,x-y>=-1,2x-y