Solving a Quadratic Equation

Consider the quadratic equation given by:

$$x^2 - 6x + 8 = 0$$

To find the values of $x$, use the quadratic formula:

$$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$

Identify the values of $a$, $b$, and $c$ from the equation and apply the quadratic formula. Only input the positive solution for $x$ in the grid below.