求(3x³y²)³÷(6x²y)²-1/3(xy)²×(1/2×x²y)的值,其中x=-4,y=-1/2

求(3x³y²)³÷(6x²y)²-1/3(xy)²×(1/2×x²y)的值,其中x=-4,y=-1/2
求(3x³y²)³÷(6x²y)²-1/3(xy)²×(1/2×x²y)的值,其中x=-4,y=-1/2

求(3x³y²)³÷(6x²y)²-1/3(xy)²×(1/2×x²y)的值,其中x=-4,y=-1/2
(3x³y²)³÷(6x²y)²-1/3(xy)²×(1/2×x²y)
=27*X^9*y^6÷(36*X^4*y^4)-1/3X^2*y^2*1/2X^2*y
=3/4X^5y^2-1/3X^4y^3
把x=-4,y=-1/2代入后得到
3/4*1024*1/4-1/3*256*-1/8
=192+32/3
=608/3
不懂的欢迎追问,