X 4 3x 3 9x 2 23x 12 July 8, 2019 16 32 64 128 3 x 3 = 9 9 * 3 ^ (x ^ 2 - 4x) 3 ^ - 1 (x + 3)/(4x ^ 2 - 9) - (3 - x)/(4x ^ 2 + 12x + 9) = 2/(2x - 3)
