[x(x²y²-xy)-y(x²-x³y)]÷3x²y,要过程,急,请
急![(3x+y)²-3(3x-y)(x+y)-(x-3y)(x+3y)]÷(2xy)
x²/xy-x/y
[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
(x-y)/(2x+2y)与(xy)/(x+y)²通分要过程
[-xy/(x-y)²]²×(y²-xy/x)³
分式除法(2y-x)÷x²-4xy+4y²/x+3xy要过程
化简x-y分之x + x³-2x²y+xy²分之y³ ÷ y²-x
计算:(xy-x²)×x-y/xy
x-y/x²÷x²-2xy+y²/xy*(xy-x²)
【(1)/(x-y)+(1)/(x-y)】÷(2x)/(x²-2xy+y²)