1 2x 2 4x 0 July 8, 2019 16 32 64 128 1 2x 2 4x 3 0 1 2x 2 4x 4 0 1 2x 2 4x 5 0 2x 2 4x 1 0 completing the square 2x 2 4x 1 0 quadratic formula 2x 2 4x 1 0 discriminant 12x 2 4x 1 0 12x 2 24x 0 12x 3 12x 2 24x 0 1 2x 0 4x 2 4y 3 1 2x 4 )= 1 2 0 4x 3x 3 2x 2 4x 1 0 3 2x 5 )- 2 4x 1 )= 0 1 2 2x 0 1 )= 2 4x 0 08 4x 2 55 =- 2x 1 05