5a a 4 2a 3 July 8, 2019 16 32 64 128 5a 4 2a 3a 11a 2a 3 )+ 5a a 4 5a 6b 4 )(- 2a 3b Expand and simplify 5a a 4 )- a 2a 3 A 2a 3 4 5a 6a 7 8