作业帮先化简在求值：(-1/3XY)²×[xy(2x-y)-2x(xy-y)²],其中X=-3/2,Y=2.
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/29 18:08:58
![先化简在求值：(-1/3XY)²×[xy(2x-y)-2x(xy-y)²],其中X=-3/2,Y=2.](/uploads/image/z/2095810-34-0.jpg?t=%E5%85%88%E5%8C%96%E7%AE%80%E5%9C%A8%E6%B1%82%E5%80%BC%EF%BC%9A%28-1%2F3XY%29%26%23178%3B%C3%97%5Bxy%282x-y%29-2x%28xy-y%29%26%23178%3B%5D%2C%E5%85%B6%E4%B8%ADX%3D-3%2F2%2CY%3D2.)
先化简在求值：(-1/3XY)²×[xy(2x-y)-2x(xy-y)²],其中X=-3/2,Y=2.
先化简在求值：(-1/3XY)²×[xy(2x-y)-2x(xy-y)²],其中X=-3/2,Y=2.
先化简在求值：(-1/3XY)²×[xy(2x-y)-2x(xy-y)²],其中X=-3/2,Y=2.
1/9x2y2 X （2x2y-xy2-2x2y+2xy2）
1/9x2y2 X xy2
(-1/3XY)²×[xy(2x-y)-2x(xy-y)²],
=1/9x²y²*(2x²y-xy²-2x²y+2xy²)
=1/9x²y²*xy²
=1/9x³y^4
=1/9x(-3/2)³x(-2)^4
=-1/9x27/8x16
=-6