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：2024/05/01 04:38:45
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