Solve f(x)=x²: Finding the Input Value When f(x)=25

To solve this problem, we'll follow these steps:

• Step 1: Set up the equation based on the function $f(x)=x^2$ for $f(?)=25$.
• Step 2: Solve for $x$ by applying the square root operation.

Now, let's work through each step:
Step 1: We start with the equation $x^2 = 25$ derived from $f(x) = 25$.
Step 2: To solve for $x$, we take the square root of both sides:

$x = \pm \sqrt{25}$

Calculating the square root gives us $x = \pm 5$. However, we are looking for a specific point that fits one of the answer choices:
Therefore, the solution based on the choices provided is $x = 5$.

Concluding, the missing value of the function point is $f(5)$, which coincides with choice 1.