解:5ab²-2a²b+[3ab²-(4ab²-2a²b)]=5ab²-2a²b+3ab²-4ab²+2a²b=(5+3-4)ab²+(2-2)a²b=4ab²【数学之美】团为您解答,满意请采纳,不明白请追问,祝学习进步O(∩_∩)O~~
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