作业帮5ab²-[2a²b-(4ab²-2a²b)]
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/14 22:32:24
5ab²-[2a²b-(4ab²-2a²b)]
5ab²-[2a²b-(4ab²-2a²b)]
5ab²-[2a²b-(4ab²-2a²b)]
5ab²-[2a²b-4ab²+2a²b]
=5ab²-2a²b+4ab²-2a²b
=9ab²-2a²b
5ab²-[2a²b-(4ab²-2a²b)] =5ab²-(2a²b-4ab²+2a²b)=5ab²-2a²b+4ab²-2a²b=9ab²-4a²b