B 1 2b 5 July 8, 2019 16 32 64 128 B 3b 1 )( 2b 5 7 2b 1 b 5 2b B 2 5 2b 1 15 1 2b )( 1 5b b 2 1 2b 5 for b 14 5b 4 7 b 1 )- 2b 2b 5 b 1 )=- 9 2a b 1 3a 2b 5 5b (b – 1) (b + 1) 2 5 1 b B) 1 5
