X x 2 18 July 8, 2019 16 32 64 128 X 2 18x complete the square X 2 18x 81 factored X 2 18x 81 X 2 18x 81 0 X 2 18x 45 X 2 18x X 2 18 7x X 2 18x 80 0 X 2 18 9x X 2 18 3x X 2 18 11x X 2 18x 40 X 2 18 9x 0 X 2 18 7x 0 X 2 18 13