To evaluate the function $f(x) = x^2 - 4x - 2$, we need to substitute a specific value of $x$ into the equation. However, since you haven't provided a specific value for $x$, I'll show you how to evaluate it generally.

Step 1: Write the function

$f(x) = x^2 - 4x - 2$

Step 2: Substitute a value of $x$ (e.g., $x = 3$)

$f(3) = (3)^2 - 4(3) - 2$ $f(3) = 9 - 12 - 2$ $f(3) = -5$

So, for $x = 3$, the value of the function is $f(3) = -5$.

If you want to evaluate for a different value of $x$, just substitute that number into the equation!

Would you like to evaluate it for another value of $x$? Let me know if you have any questions or need further details.

Here are some related questions you could explore:

1. How would you factor the quadratic function $f(x) = x^2 - 4x - 2$?
2. What are the roots (or solutions) of the equation $x^2 - 4x - 2 = 0$?
3. How can we find the vertex of the parabola represented by $f(x) = x^2 - 4x - 2$?
4. What is the behavior of the function for large values of $x$?
5. How does completing the square help us understand the function better?

Tip: When dealing with quadratic functions, it's often helpful to complete the square or use the quadratic formula to find specific values like roots or the vertex!