\[2x^{2} + 7x - 4 > 0\]
\[D = 49 + 32 = 81\]
\[x_{1} = \frac{- 7 + 9}{4} = \frac{2}{4} = 0,5;\]
\[x_{2} = \frac{- 7 - 9}{4} = - 4;\]
\[2(x + 4)(x - 0,5) > 0\]
\[x < - 4;\ \ x > 0,5.\]
\[Ответ:x < - 4;\ \ x > 0,5.\]