Ответ:
\[x² + 14x + 49 > 0\]
\[(x + 7)^{2} > 0\]
\[(x + 7)^{2} = 0\]
\[x = - 7\]

\[Ответ:( - \infty; - 7) \cup ( - 7;\ + \infty).\]
\[x² + 14x + 49 > 0\]
\[(x + 7)^{2} > 0\]
\[(x + 7)^{2} = 0\]
\[x = - 7\]

\[Ответ:( - \infty; - 7) \cup ( - 7;\ + \infty).\]