2a^b-4ab+3-5a^2-6合并同类项

问题描述:

2a^b-4ab+3-5a^2-6合并同类项

2a^b-4ab+3-5a^2-6
=2a^b-4ab-5a^2-3是5a^2b麻烦重解答一下题目是2a^2b-4ab+3-5a^2b?=-3a^2b-4ab+3