\[- 6x^{2} + 13x - 5 \geq 0\]
\[- 6x^{2} + 13x - 5 = 0\]
\[D = 169 - 120 = 49\]
\[x_{1} = \frac{- 13 + 7}{12} = 0,5\ \ \ \ \]
\[x_{1} = \frac{- 13 - 7 - 12}{- 12} = 1\frac{2}{3}\]
\[Ответ:x = 1.\]