X 2 1 2 5 x 2 1 ) 6 0 July 8, 2019 16 32 64 128 X 2 1 2 5 x 2 1 )+ 6 0 2 x 1 3 * 2 x 1 5 * 2 x 6 0 (x ^ 2 - 2)/6 - (1 - x)/2 = (x - 5)/6