7 4 2 9 3 July 8, 2019 16 32 64 128 7 4 9 2 1 3 7 4 9 3 2 6 4 7 8 9 2 3 7 4 3x )= 2 8x 9 )+ 6 4 9 2 3 class 7 4 2 8 x 9 7 3 7 2 3 x 9 3 4 7 1 2 x 9 3 4 7 9 3 4 0 2 7 2 9 4 1 3 х 9 5 7 4 9 2 3 X 4 7 5 9 2 3 7 12 3 4 x 2 9 7 2 4 3x 3 3 9 4x 7 4 t 2 )- 3t =- 9 2