作业帮3x²y-[x²y²-2(xy-2/3x²y)＋xy]+3x²y²,其中x=3,y=-1/3 化简计算
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/07 02:44:10
![3x²y-[x²y²-2(xy-2/3x²y)＋xy]+3x²y²,其中x=3,y=-1/3 化简计算](/uploads/image/z/2994436-28-6.jpg?t=3x%26%23178%3By-%5Bx%26%23178%3By%26%23178%3B-2%28xy-2%2F3x%26%23178%3By%29%EF%BC%8Bxy%5D%2B3x%26%23178%3By%26%23178%3B%2C%E5%85%B6%E4%B8%ADx%3D3%2Cy%3D-1%2F3+++++%E5%8C%96%E7%AE%80%E8%AE%A1%E7%AE%97)
3x²y-[x²y²-2(xy-2/3x²y)＋xy]+3x²y²,其中x=3,y=-1/3 化简计算
3x²y-[x²y²-2(xy-2/3x²y)＋xy]+3x²y²,其中x=3,y=-1/3 化简计算
3x²y-[x²y²-2(xy-2/3x²y)＋xy]+3x²y²,其中x=3,y=-1/3 化简计算