作业帮化简求值:[4(xy-1)²-(xy+2)(2-xy)]÷ -1/4 xy,其中x=-2,y=1/5注意：是-1/4xy
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/05 22:06:07
![化简求值:[4(xy-1)²-(xy+2)(2-xy)]÷ -1/4 xy,其中x=-2,y=1/5注意：是-1/4xy](/uploads/image/z/976649-41-9.jpg?t=%E5%8C%96%E7%AE%80%E6%B1%82%E5%80%BC%3A%5B4%28xy-1%29%26%23178%3B-%28xy%2B2%29%282-xy%29%5D%C3%B7+-1%2F4+xy%2C%E5%85%B6%E4%B8%ADx%3D-2%2Cy%3D1%2F5%E6%B3%A8%E6%84%8F%EF%BC%9A%E6%98%AF-1%2F4xy)
化简求值:[4(xy-1)²-(xy+2)(2-xy)]÷ -1/4 xy,其中x=-2,y=1/5注意：是-1/4xy
化简求值:[4(xy-1)²-(xy+2)(2-xy)]÷ -1/4 xy,其中x=-2,y=1/5
注意：是-1/4xy
化简求值:[4(xy-1)²-(xy+2)(2-xy)]÷ -1/4 xy,其中x=-2,y=1/5注意：是-1/4xy
化简结果是：-20xy+32代入得40