\[3y^{2} + 17y - 6 < 0\]
\[3y^{2} + 17y - 6 = 0\]
\[D = 289 + 72 = 361 = 19^{2}\]
\[y_{1} = \frac{- 17 + 19}{6} = \frac{2}{6} = \frac{1}{3};\]
\[y_{2} = \frac{- 17 - 19}{6} = - \frac{36}{6} = - 6\]
\[3(y + 6)\left( y - \frac{1}{3} \right) < 0\]
\[При\ y \in \left( - 6;\frac{1}{3} \right).\]