(-1/2x²y)³+(0.5x)²y³(x²)² 急!
(-1/2x²y)³+(0.5x)²y³(x²)² 急!
求因式分解(x-y)²-2(x-y)³和(x+y)(x-y)-x(x-y)
多项式因式分解 1,(x-y)³-(x-y)²(x+y) 2,x(x²-xy)-(4x
(x-y)的四次方(x-y)-2(x-y)²(y-x)³等于?
(x-y)³+9(x-y)-6(x-y)²
(x-y)³(x-y)²(y-x)等于多少
急![(3x+y)²-3(3x-y)(x+y)-(x-3y)(x+3y)]÷(2xy)
约分下列分式(x-y)/(y-x)³(x²-9)/(6-2x)(x²-1)/(x-x
求导:y=x{x²+(1/x)+(1/x³)}急!
1/2 x²y·( )=2x³y-x²y²
若x、y满足2x+y=6,x-3y=1,求7y(x-3y)²-2(3y-x)³的值
化简x-y分之x + x³-2x²y+xy²分之y³ ÷ y²-x