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