| x² + 13x - 90 = 0 x1 = -18 , x2 = 5 | x² + 30x + 224 = 0 x1 = -16 , x2 = -14 |
| x² - x - 42 = 0 x1 = -6 , x2 = 7 | x² - 25x + 100 = 0 x1 = 5 , x2 = 20 |
| x² + 10x - 144 = 0 x1 = -18 , x2 = 8 | x² - 26x + 160 = 0 x1 = 10 , x2 = 16 |
| x² + 16x = 0 x1 = -16 , x2 = 0 | x² - 30x + 224 = 0 x1 = 14 , x2 = 16 |
| x² - 15x + 44 = 0 x1 = 4 , x2 = 11 | x² - 11x - 80 = 0 x1 = -5 , x2 = 16 |
| x² + 7x = 0 x1 = -7 , x2 = 0 | x² + 6x - 135 = 0 x1 = -15 , x2 = 9 |
| x² + 13x + 12 = 0 x1 = -12 , x2 = -1 | x² + 14x = 0 x1 = -14 , x2 = 0 |
| x² - 19x - 20 = 0 x1 = -1 , x2 = 20 | x² + 19x + 84 = 0 x1 = -12 , x2 = -7 |
| x² - 6x - 7 = 0 x1 = -1 , x2 = 7 | x² - 10x = 0 x1 = 0 , x2 = 10 |
| x² + 13x + 22 = 0 x1 = -11 , x2 = -2 | x² + 7x - 8 = 0 x1 = -8 , x2 = 1 |