7a²-(5a²-2b)+4a(2a²-3b)化简

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/17 19:05:32

7a²-(5a²-2b)+4a(2a²-3b)化简
7a²-(5a²-2b)+4a(2a²-3b)化简

7a²-(5a²-2b)+4a(2a²-3b)化简
7a²-(5a²-2b)+4a(2a²-3b)
=7a²-5a²+2b+8a³-12ab
=8a³+2a²-12ab+2b

=2a²-5b+8a^3