1 2x 2 x 1 3x 2 6x 3 July 8, 2019 16 32 64 128 2 3x 1 15 6x 2 x 1 3 2x 1 1 x 1 2 x 2 3) 1/(2x + 2) - (x - 1)/(3x ^ 2 + 6x + 3)