\[Дополнительное\ решение:\]
\[6y^{2} + 11y - 2 = 0\]
\[y_{1} + y_{2} = - \frac{11}{6}\]
\[y_{1} \cdot y_{2} = - \frac{1}{3}\]
\[\Longrightarrow y_{1} = 2;\ \ y_{2} = \frac{1}{6}.\]
\[6y^{2} + 11y - 2 =\]
\[= 6 \cdot (y + 2)\left( y - \frac{1}{6} \right) =\]
\[= (y + 2)(6y - 1).\]