N 3 )( n 2 )= 0 July 8, 2019 16 32 64 128 N 3 3n 2 2n 120 0 3n n 2 )= 0 N 1 n 2 n 3 0 N 3 n 2 6n 0 N 3 3n 2 2n 60 0 N 3 3n 2 2n 336 0 N 3 2 0 on a number line
