2 12x 64 0 July 8, 2019 16 32 64 128 X 2 12x 64 0 X 4 12x 2 64 0 X 3 12x 2 48x 64 0 X 2 12x 64 0 complete the square 2x 2 12x 64 0 Factor x 2 12x 64 0 12x 7x 2 64 0