3 n 2 )- 8n 5n 2 July 8, 2019 16 32 64 128 3n 3 5n n 2 8n 2 3n 3 3n 2 8n 2 5n 8 3 8n n 2 )+( 7 2n 2 5n 3 -5n+2n
