试说明代数式/-(3x²y+10x³)+3x³+6x³y+3x²y-(
试说明代数式-(3x²y+10x³)+3x³6x³y+3x的值与x,y都无关
试说明代数式:—(3x²y+10x³)+3x³+6x³y+3x²y—(
已知x³=10-y³,x²y-xy²=-3,求代数式(x³-y
合并同类项:-6x²y-x+5x²y-2x+x³y+3x
试说明代数式-(3x^2y+10x^3)+3x^3+6x^3y+3x^2y-(6x^3y-7x^3)的值与x,y都无关
若代数式x³+y³+3x²y+axy² 含有因式x+y,求a值
(x-y)³+9(x-y)-6(x-y)²
试说明:多项式(5x³-7x³y+3x²y)+2x³-(-7x³y+3
[x(x²y²-xy)-y(x²-x³y)]÷3x²y
【x(x²y²-xy)-y(x²-x³y)】÷3x²y
因式分解:[x(x²y²-xy)-y(x²-x³y)]÷3x²y
若x、y满足2x+y=6,x-3y=1,求7y(x-3y)²-2(3y-x)³的值