4 9x 2 0 July 8, 2019 16 32 64 128 4 49x 2 0 X 4 9x 2 0 12x 4 9x 2 0 2x 4 9x 2 0 4x 4 9x 2 0 X 4 49x 2 0 X 4 9x 2 20 0 9x 2 4 0 quadratic formula X 4 9x 2 8 0 X 4 9x 2 14 0 X 4 9x 2 18 0 9x 4 19x 2 2 0 3x 4 9x 2 12 0 9x 2 4 0 решите уравнение 2x 4 9x 2 5 0