1.First write the problem: 4^a - (6a -2) + 3 (a^-1). 2.Now factor (6a -2) which is 2(3a-1). 3.Next factor 3 (a^-1) which is (3a^-1). 4.Cancel out all common terms. 5.Now you are left with 4^a. That is as much as it will simplify. Hope I could help!:-)))
