2 2 4x 5 0 July 8, 2019 16 32 64 128 X 2 4x 2 5 0 2 4x 5 0 X 2 y 2 4x 5 0 2x 1 2 4x 2 5 0 X 2 2x y 2 4x 5 0 2x 1 2 4x 2 5 0 is not a quadratic equation 2 x 2 5 2 4 × 0 5
