3. Решите уравнение: к) \(\frac{1}{6}\)x² - \(\frac{5}{6}\) = 0;

\(\frac{1}{6}\)x² - \(\frac{5}{6}\) = 0
\(\frac{1}{6}\)x² = \(\frac{5}{6}\)
x² = \(\frac{5}{6}\) * 6
x² = 5
x = ±\(\sqrt{5}\)
Ответ: x₁ = \(\sqrt{5}\), x₂ = -\(\sqrt{5}\)