K 2 3k 2 )( 2k 3 July 8, 2019 16 32 64 128 K 2 31 2k 3k 2 2k K 2 31 2k =- 6 3k 2 2k K 2 31 2k =- 6 3k 2 2k quadratic formula 2k 1 k 2 k 1 3k 2 3k 3
