Find and simplify the expression if $f(x)=x^{2}-5$ \[ f(4)+f(h) \] $f(4)+f(h)=\square$ (Simplify your answer.)

Step 1 ：First, we need to substitute the values 4 and h into the function f(x) = x^2 - 5.

Step 2 ：Substitute 4 into the function: \(f(4) = (4)^2 - 5 = 16 - 5 = 11\).

Step 3 ：Substitute h into the function: \(f(h) = (h)^2 - 5\).

Step 4 ：Now, we add these two results together: \(f(4) + f(h) = 11 + h^2 - 5\).

Step 5 ：Simplify the expression: \(f(4) + f(h) = h^2 + 6\).

Step 6 ：\(\boxed{f(4) + f(h) = h^2 + 6}\) is the final answer.