4 b 2 12 July 8, 2019 16 32 64 128 B 6 4b 4 12b 2 9 4 2 b 6 12 B 4 1 3b 2 )( 12b 8 4 2a b 2 12 b 2a Solve 4 2 b 6 12 4 2 b 4 + 4 = 12
