3x 9 x 1 x 6 x 1 3 July 8, 2019 16 32 64 128 3 x 3 = 9 9x(x + 6) - (3x + 1) ^ 2 = 1 (3x + 1)/(3x - 1) - (3x - 1)/(3x + 1) = 6/(1 - 9x ^ 2) 9x-6*3x-1 3
