5 7x^2=0 July 8, 2019 16 32 64 128 5 7x 2 0 7x 2 12x 5 0 7x 2 5x 5 0 7x 2 4x 5 0 7x 2 18x 5 0 7x 2 11x 5 0 7x 2 14x 5 0 7x 2 9x 5 0 7x 2 10x 5 0 7x 2 16x 5 0 2x2 7x 5 2 0 2x2 7x 5 2 0 by quadratic formula
