2k 2 )( 3k 4 July 8, 2019 16 32 64 128 2k 3 7k 2 3k 4k 2 5k 2k 4 3k 2 3 14 4 2k 4 )=- 2 4 3k 2k 3 (2 + 3k2)(–2 + 3k2)(9k4 + 4)
