Step 1 :The problem is asking to substitute the value of x into the expression and simplify. The expression is \(x^{2}+4\) and the given value of x is 3. So, we need to substitute 3 for x in the expression and simplify.
Step 2 :Substitute x = 3 into the expression, we get \(3^{2}+4\).
Step 3 :Simplify the expression, we get 13.
Step 4 :Final Answer: The result of the expression \(x^{2}+4\) for \(x=3\) is \(\boxed{13}\).