(- k 5 )-( 3k 2 6 July 8, 2019 16 32 64 128 3 k 5 )=- 2 3k 6 Solve 2 k 5 )+ 3k k 6 2 left k 5 right )+ 3k k 6 0 6k(5k 3) 18 9 1 5k(3 2k)
