X 2 4x 9 0 July 8, 2019 16 32 64 128 X 2 4x 9 0 quadratic formula X 2 4x 9 0 complete the square X 2 4x 9 0 roots X 2 4x 9 4 0 X 3 4x 2 9 0 X 4 16x 2 24x 9 0 X2 24x 9 0 X 2 y 2 4x 6y 9 0 X 2 y 2 4x 12y 9 0 4x 3 x 2 36x 9 0 4x 2 12 x 9 0 X 4 4x 3 18x 2 12x 9 0 X 4 4x 2 12x 9 0 X 4 4x 2 y 2 6y 9 0 4x 2 9 )( 2 x 1 1 )= 0