Solve x 2 5x 4x 2 5x 6 120 July 8, 2019 16 32 64 128 Solve x 2 5x 4 * x 2 5x 6 120 Solve 4x ^ 2 - 5x - 12 =( Solve 4x ^ 2 - 5x - 12 = 0