(-1\3xy+3\2y²-x²)(-6xy²)
问题描述:
(-1\3xy+3\2y²-x²)(-6xy²)
1.(-1\3xy+3\2y²-x²)(-6xy²)
2.(x-3)(x+3)-(x+1)(x+3)
3.[-2xy(3x²y³)²-1\4(x³y²)³+1\2x²y²(x²y)⁴]÷[(-3\2x)×(x²y²)²]
答
1.2y+9x+6x^3y^2
2.(x+3)(x-3-x-1)=(x-3)(-4)=12-4x
3.最后一个式子有点混乱