A 4 b 2 1 July 8, 2019 16 32 64 128 A 4 b 2 c 1 A 3 4 b 2 1 A 4 b 4 2b 2 1 4 b 2 16 4 b 2 10 A 4 1 b 2 5 A 4 b 3 c 2 d 1 A 1 4 b 3 2 c 7 5 A b 1 2 3 4 5 A 1 b 3 4 b c a 2 1 4 a's 2 b's 1 c gpa Expand a 4 b 2 1 A 4 b 4 2b 2 1 factorise 4 b 2 12 4 b 2 18
