\[5y^{2} + 14y - 3 = 0\]
\[D = 49 + 15 = 64\]
\[y_{1} = \frac{- 7 + 8}{5} = \frac{1}{5} = 0,2;\ \ \ \]
\[y_{2} = \frac{- 7 - 8}{5} = - 3.\]