1 x x 2 x 3 x n 1 formula July 8, 2019 16 32 64 128 1 x x 2 x 3 x n формула 1 x x 2 x 3 x n formula proof 1 x x 2 x 3 x n expansion formula 1 x x 2 x 3 xn formula 1 + 1 = 2 + 2 = 3
