\[(x + 2)^{2} - 49 = 0\]
\[(x + 2 - 7)(x + 2 + 7) = 0\]
\[(x - 5)(x + 9) = 0\]
\[x = 5;\ \ \ x = - 9.\]
\[Ответ:\ - 9;\ 5.\]