Related Post: 18x 2 2 0 18x 2 12x 2 0 18x 2 9x 2 0 X 2 18x 2 0 X 2 18x 2 0 Complete The Square 3x 2 18x 2 0 4x 2 18x 2 0 X 2 18 X 5 2 0 2^0 + 2^1 + 2^2 Formula