Question #N573
If $x^2 - 6x + 8 = 0$, what is the sum of the solutions to this equation?
A. -6
B. -8
C. 6
D. 8
Correct Answer is: C
The sum of the roots of a quadratic equation of the form $ax^2 + bx + c = 0$ is equal to $-b/a$. In this case, $a = 1$ and $b = -6$, so the sum of the solutions is $-(-6)/1 = 6$.