试说明代数式:—(3x²y+10x³)+3x³+6x³y+3x²y—(
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
已知x³=10-y³,x²y-xy²=-3,求代数式(x³-y
试说明:多项式(5x³-7x³y+3x²y)+2x³-(-7x³y+3
[x(x²y²-xy)-y(x²-x³y)]÷3x²y
因式分解:[x(x²y²-xy)-y(x²-x³y)]÷3x²y
合并同类项:-6x²y-x+5x²y-2x+x³y+3x
无论x,y取何值时,代数式:(x³+3x²y-5xy+6y³)+(y³+2xy&
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
说明代数式-(3x平方y+10x立方)+3x立方+6x立方y+3x平方y-(6x立方y-7x立方)的值与x,y无关
若代数式x³+y³+3x²y+axy² 含有因式x+y,求a值
已知4x²+y²-4x-6y+10=0求(2/3x(√9x)+(y²√x/y³)