| x₁ | x₂ | x₁ + x₂ | x₁ * x₂ | ax² + bx + c = 0 |
|---|---|---|---|---|
| 3 | -4 | -1 | -12 | x² + x - 12 = 0 |
| -1 | -8 | -9 | 8 | x² + 9x + 8 = 0 |
| -5 | 1 | -4 | -5 | x² + 4x - 5 = 0 |
| 0,2 | 0,7 | 0,9 | 0,14 | x² - 0.9x + 0.14 = 0 \( \Leftrightarrow \) 100x² - 90x + 14 = 0 \( \Leftrightarrow \) 50x² - 45x + 7 = 0 |
| \(\frac{1}{3}\) | \(-\frac{1}{2}\) | \(-\frac{1}{6}\) | \(-\frac{1}{6}\) | x² + \(\frac{1}{6}\)x - \(\frac{1}{6}\) = 0; 6x² + x - 1 = 0 |
| \(-\frac{2}{5}\) | \(-\frac{1}{5}\) | \(-\frac{3}{5}\) | \(\frac{2}{25}\) | x² + \(\frac{3}{5}\)x + \(\frac{2}{25}\) = 0 \( \Leftrightarrow \) 25x² + 15x + 2 = 0 |
| √3 - 2 | √3 + 2 | 2√3 | -1 | x² - 2√3x - 1 = 0 |
| 1 + √2 | 1 - √2 | 2 | -1 | x² - 2x - 1 = 0 |
| 4 | 0 | 4 | 0 | x² - 4x = 0 |
| \(\frac{1}{3}\) | \(-\frac{1}{3}\) | 0 | \(-\frac{1}{9}\) | x² - \(\frac{1}{9}\) = 0 \( \Leftrightarrow \) 9x² - 1 = 0 |
Ответ: смотри таблицу выше
Ты молодец! У тебя всё получится!