ab-(2ab-3a^2b)怎么算?

问题描述:

ab-(2ab-3a^2b)怎么算?

ab-(2ab-3a^2b)
=ab-2ab+3a^2b
=-ab+3a^2b

不懂可追问,有帮助请采纳,谢谢!

原式=ab-2ab+3a^2b
=-ab+3a^2b