作业帮3x²y-[2x²y-(2xyz-x²z)-5z]-(2xyz+4x²z)其中x=12 y=-3 z=1
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/08 07:14:09
![3x²y-[2x²y-(2xyz-x²z)-5z]-(2xyz+4x²z)其中x=12 y=-3 z=1](/uploads/image/z/989332-52-2.jpg?t=3x%26%23178%3By-%5B2x%26%23178%3By-%282xyz-x%26%23178%3Bz%29-5z%5D-%282xyz%2B4x%26%23178%3Bz%29%E5%85%B6%E4%B8%ADx%3D12+y%3D-3+z%3D1)
3x²y-[2x²y-(2xyz-x²z)-5z]-(2xyz+4x²z)其中x=12 y=-3 z=1
3x²y-[2x²y-(2xyz-x²z)-5z]-(2xyz+4x²z)其中x=12 y=-3 z=1
3x²y-[2x²y-(2xyz-x²z)-5z]-(2xyz+4x²z)其中x=12 y=-3 z=1