\[При\ c + 5 \geq 1 \rightarrow c \geq - 4:\]
\[\sqrt{c + 5} + 1 + \sqrt{c + 5} - 1 =\]
\[= 2\sqrt{c + 5}.\]
\[При\ c < - 4:\]
\[\sqrt{c + 5} + 1 + 1 - \sqrt{c + 5} = 2.\]