X 2 1 5x 0 July 8, 2019 16 32 64 128 X 2 5x 1 0 quadratic formula X 2 5x 1 0 completing the square X 2 15x 1 0 X 2 √ 5x 1 0 X 1 2 5x 5 0 Solve x 2 5x 1 0 X 2 5x 1 4 0 X 3 3x 2 5x 1 0 X 1 2 5x 1 6 0 Решите квадратное уравнение x 2 1 5x 0 X 3 6x 2 5x 1 0 X2 2 5x 1 0 5x 2 x 1 0 дискриминант X 4 5x 3 8x 2 5x 1 0