Komposisi Fungsi fogoh

\begin{equation*}
\begin{split}
(f \circ g \circ h) (x) & = f \left[ g ( (h(x) ) \right] \\\\
(f \circ g \circ h) (x) & = f \left[ g \left(x^2 - 5 \right)  \right] \\\\
(f \circ g \circ h) (x) & = f \left[ \sqrt{4 - (x^2 - 5)} \right] \\\\
(f \circ g \circ h) (x) & = f \left[ \sqrt{9 - x^2} \right] \\\\
(f \circ g \circ h) (x) & = 2 \sqrt{9 - x^2} + 1
\end{split}
\end{equation*}