3(x-y)²(x+y)²-9(x+y)³(y-x)³
求因式分解(x-y)²-2(x-y)³和(x+y)(x-y)-x(x-y)
因式分解 -5x³y(x-y)³+20y【x²(y-x)】²
(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?
[x(x²y²-xy)-y(x²-x³y)]÷3x²y
因式分解:[x(x²y²-xy)-y(x²-x³y)]÷3x²y
2.(x+y)²(x-y)²-(x-y)(x+y)(x²+y²)
因式分解(x³+y³)²-9x²y²(x+y)²
先化简再求值:(x-2y)²-(x+2y)(x-2y)-(x-3y)(x-y).其中x²+9y
5(x-y)³-3(x-y)²+7(x-y)-5(x-y)³+(x-y)²-5(
已知方程组2x-y=10,x+2y=11,求(2x-y)³-(2x-y)²(x-3y)的值
已知4x²+y²-4x-6y+10=0求(2/3x(√9x)+(y²√x/y³)