3x³ - 6x²y+ 3xy²

3x³ - 6x²y+ 3xy² 化简4x³(-y³)²-3x·(-x)²(-y²)³化简4x³(-y³)²-3x·(-x)²(-y²)³ 计算并写出每个运算步骤的根据[(-x²y³)²*(-x)³(-y²)]³这样算对不对[(-x²y³)²*(-x)³(-y²)]³ =[x^4*y^6*-x^3*-y^2]^3 （积与幂的乘方性质）=[(x^4*-x^3)*(y^6*-y^2)]^3 化简再求值 4x³（-y³）²-3x×（-x）²（-y²）³滚 x³y³-x²y²-xy+1 x³-x²y-xy²+y³(因式分解) （-2xy²）³ 乘(3x²y)²+4x³y² 乘 18x的4次方y的6次方 6xy²-9x²y-y³ 6xy²-9x²y-y³因式分解 (x+y)²-（x³+y³)÷（x+y) 化简在求值 x²+x³-6y²+1-5x³-x+(y-x²)+6(x²+y²+y) x=3 y=2分之1 降幂的题,x³-y³+3x²y-4xy²= 3x³-【x³+(6x²-7x)-2(x³-3xy-4y)】,其中x=-1,y=1 化简在求值 x²+x³-6y²+1-5x³-x+(y-x²)+6(x²+y²+y) x=3 y=2分之1化简在求值 x²+x³-6y²+1-5x³-x+(y-x²)+6(x²+y²+y) x=3 y=2分之1 先合并同类项在代值 计算 ①[x(x²y²-xy)-y(x²-x³y)]÷3x²y 计算：[x(x²y²-xy)-y(x²-x³y)]÷3x²y [x(x²y²-xy)-y(x²-x³y)]÷3x²y 6xy²-9x²-y³