化简:3a²-[7a-3(4a-3)-2a²]
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/25 23:33:32
化简:3a²-[7a-3(4a-3)-2a²]
化简:3a²-[7a-3(4a-3)-2a²]
化简:3a²-[7a-3(4a-3)-2a²]
3a²-[7a-3(4a-3)-2a²]
=3a²-(7a-12a+9-2a²)
=3a²+2a²+5a-9
=5a²+5a-9
化简:3a²-[7a-3(4a-3)-2a²]
化简:3a²-[7a-3(4a-3)-2a²]
化简:3a²-[7a-3(4a-3)-2a²]
3a²-[7a-3(4a-3)-2a²]
=3a²-(7a-12a+9-2a²)
=3a²+2a²+5a-9
=5a²+5a-9