X 2 5 =- 6 2 15 July 8, 2019 16 32 64 128 Х 2 5 =- 6 2 15 6 3 5 x 2 2 15 2 x 5 )- 2 x 4 )=- 6 15 (- 3 X 6 2 y 5 2 15 2 5 x 2 15 6 x 2 9 2 x 2 5