\[\sqrt{x + 2} = x - 4\]
\[ОДЗ:x - 4 \geq 0\]
\[x \geq 4.\]
\[x + 2 = (x - 4)^{2}\]
\[x + 2 = x^{2} - 8x + 16\]
\[x^{2} - 9x + 14 = 0\]
\[x_{1} + x_{2} = 9;\ \ x_{1} \cdot x_{2} = 14\]
\[x_{1} = 2 < 4;\]
\[x_{2} = 7.\]
\[Ответ:x = 7.\]