2a 2b 4 5 a July 8, 2019 16 32 64 128 2a 2b 4 5 a solution 2a 2b 4 5 a simplify 2a 2b 4 5 a formula 2a 2b 4 5 a answer V 2a 2b 4 5 a The value of expression 2a 2b 4 5 a - 2 4a(- 5b)