4x³(-y³)²-3x·(-x)²·(-y²)³,其中x=
1/2 x²y·( )=2x³y-x²y²
求因式分解(x-y)²-2(x-y)³和(x+y)(x-y)-x(x-y)
计算:①-x·(y-x)³·(x-y)的四次方 ②(x-y)²·(y-x)³·(x-y)的
因式分解 -5x³y(x-y)³+20y【x²(y-x)】²
[x(x²y²-xy)-y(x²-x³y)]÷3x²y
因式分解:[x(x²y²-xy)-y(x²-x³y)]÷3x²y
【(2x+y)²-y(y+4x)-8x】÷2x,其中x=100
(x-y)³(y-x)(y-x)²+(x-y)^6
(3x+2y)(4x-5y)+(2x)²×(3y)³÷36x²y+5xy,其中x=1,y=
(x-y)的四次方(x-y)-2(x-y)²(y-x)³等于?
(-2x²/y)²·(-2y²/3x)³÷(2y/x)^4
3(x-y)²·[-四分之十五(y-x)³][-三分之二(x-y)^4]