5x 2 4x 8 0 July 8, 2019 16 32 64 128 5x 4 9x 3 2x 2 4x 8 0 The quadratic equation 5x 2 4x 8 0 has 5x 2 8xy 5y 2 4x 4y 8 0 X 4 5x 3 6x 2 4x 8 0 X 3 4x 2 5x 8 0 4x 2 5x 12 0 8 5x2 + 8x − 4 = 0