作业帮-3(xy-2x²)-[y²-(5xy-4x²)+2xy]
来源：学生作业帮助网 编辑：作业帮 时间：2024/07/06 02:11:15
![-3(xy-2x²)-[y²-(5xy-4x²)+2xy]](/uploads/image/z/1333280-56-0.jpg?t=-3%28xy-2x%26%23178%3B%29-%5By%26%23178%3B-%285xy-4x%26%23178%3B%29%2B2xy%5D)
-3(xy-2x²)-[y²-(5xy-4x²)+2xy]
-3(xy-2x²)-[y²-(5xy-4x²)+2xy]
-3(xy-2x²)-[y²-(5xy-4x²)+2xy]
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来源：学生作业帮助网 编辑：作业帮 时间：2024/07/06 02:11:15
-3(xy-2x²)-[y²-(5xy-4x²)+2xy]
-3(xy-2x²)-[y²-(5xy-4x²)+2xy]
-3(xy-2x²)-[y²-(5xy-4x²)+2xy]