3a²-[5a-(1∕2a-3)+2a²]+4

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/19 21:01:16
3a²-[5a-(1∕2a-3)+2a²]+43a²-[5a-(1∕2a-3)+2a²]+43a²-[5a-(1∕2a-3)+2a²]+4=

3a²-[5a-(1∕2a-3)+2a²]+4
3a²-[5a-(1∕2a-3)+2a²]+4

3a²-[5a-(1∕2a-3)+2a²]+4
=3a²-5a+1/2a-3-2a²+4
=a²-9/2a+1