作业帮化简(a²-2ab-b²）-（2a²-2b²）+3ab
来源：学生作业帮助网 编辑：作业帮 时间：2024/09/11 04:16:45
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化简(a²-2ab-b²）-（2a²-2b²）+3ab
化简(a²-2ab-b²）-（2a²-2b²）+3ab
化简(a²-2ab-b²）-（2a²-2b²）+3ab
(a²-2ab-b²）-（2a²-2b²）+3ab
=a²-2ab-b²-2a²+2b²+3ab
=-a^2+ab+b^2
(a²-2ab-b²）-（2a²-2b²）+3ab
=a²-2ab-b²-2a²+2b²+3ab
=-a²+ab+b²