2 4x 1 8x July 8, 2019 16 32 64 128 2 4x 1 )- 8x 6 4x 2 8x 1 0 4x 2 8x 1 0 complete the square 4x 2 8x 1 factored Y 4x 2 8x 1 4x 2 3 8x 1 3 4x 2 8x 1 2x 2 F x )= 4x 2 8x 1 2x 8x 1 2 4x 1 )= 9 4x 2 1 =- 8x quadratic formula 4x 2 8x 1 0 quadratic formula 2 3 4x 1 8x 9 4x 2 8x 1 in vertex form 4x 2 8x 1 0 rumus abc