作业帮5xy²-{2x²y-[3xy²-(xy²-2x²y)]÷（-1/2xy）最后那个是“负二分之一xy”. 求化简值.要完整的过程。
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/11 15:26:41
![5xy²-{2x²y-[3xy²-(xy²-2x²y)]÷（-1/2xy）最后那个是“负二分之一xy”. 求化简值.要完整的过程。](/uploads/image/z/1333262-38-2.jpg?t=5xy%26%23178%3B-%7B2x%26%23178%3By-%5B3xy%26%23178%3B-%28xy%26%23178%3B-2x%26%23178%3By%29%5D%C3%B7%EF%BC%88-1%2F2xy%EF%BC%89%E6%9C%80%E5%90%8E%E9%82%A3%E4%B8%AA%E6%98%AF%E2%80%9C%E8%B4%9F%E4%BA%8C%E5%88%86%E4%B9%8B%E4%B8%80xy%E2%80%9D.+%E6%B1%82%E5%8C%96%E7%AE%80%E5%80%BC.%E8%A6%81%E5%AE%8C%E6%95%B4%E7%9A%84%E8%BF%87%E7%A8%8B%E3%80%82)
5xy²-{2x²y-[3xy²-(xy²-2x²y)]÷（-1/2xy）最后那个是“负二分之一xy”. 求化简值.要完整的过程。
5xy²-{2x²y-[3xy²-(xy²-2x²y)]÷（-1/2xy）
最后那个是“负二分之一xy”. 求化简值.
要完整的过程。
5xy²-{2x²y-[3xy²-(xy²-2x²y)]÷（-1/2xy）最后那个是“负二分之一xy”. 求化简值.要完整的过程。
=5xy^2-{2x^2y-[3xy^2-xy^2+2x^2y]/(-xy/2)
=5xy^2+{2x^2y-2xy^2-2x^2y}/(xy/2)
=5xy^2-2xy^2/(xy/2)
=5xy^2-4y
原式=5xy²-(2x²y-3xy²+xy²-2x²y)÷（-1/2xy）}
=5xy²-(-2xy²)÷（-1/2xy）}
=5xy²-4y