B 2 5b 1 July 8, 2019 16 32 64 128 B 2 5b 14 B 2 5b 14 0 2a b 2 10a 5b 2a b 2 10a 5b factorise 5b 2 4 )( b 1 B 5 ⋅b 2 B) 2 5
