〔(-3x²y)³〕²÷(-3x²y)³
[x(x²y²-xy)-y(x²-x³y)]÷3x²y
因式分解:[x(x²y²-xy)-y(x²-x³y)]÷3x²y
已知x-y=1,y≠0,求{(x+2y)²+(2x+y)(x+4y)-3(x+y)(x-y)}÷y的值.
3(x-y)²·[-四分之十五(y-x)³][-三分之二(x-y)^4]
因式分解:1、[x(x²y²-xy)-y(x²-x³y)]÷3x²y.
求因式分解(x-y)²-2(x-y)³和(x+y)(x-y)-x(x-y)
【x(x²y²-xy)-y(x²-x³y)】÷3x²y
因式分解 -5x³y(x-y)³+20y【x²(y-x)】²
x(x-y)-y(y-x)+(x-y)²因式分解
(x-y)³(y-x)(y-x)²+(x-y)^6
(x-y)的四次方(x-y)-2(x-y)²(y-x)³等于?
5(x-y)³-3(x-y)²+7(x-y)-5(x-y)³+(x-y)²-5(