(- 4n 3 n 2 8 ) ( 6n 2 5n 9 July 8, 2019 16 32 64 128 (- 4n 3 n 2 8 )+( 6n 2 5n 9 (3n2 – 5n + 6) + (–8n2 – 3n – 2) =
