B 2 9 0 July 8, 2019 16 32 64 128 B 2 6b 9 0 B 2 10b 9 0 B 3 b 2 9b 9 0 B 2 8b 9 0 B 2 5b 9 0 Solve b 2 )( b 9 )= 0 B 9 2 B2 - 9 2b 9