N 2 5n 10 July 8, 2019 16 32 64 128 N 2 5n 10 0 N 2 25n 100 N 2 25n 100 0 5 n 2 )= 5n 10 5 n 2 )= 5n 10 how many solutions N 3 2n 2 5n 10 10n 7 n 2 ) 5n 12 10 5+2n