Question #N10
If $x^2 - 2x - 8 = 0$, what is the value of $x$?
A. -2
B. -1
C. 2
D. 4
Correct Answer is: D
We can factor the quadratic equation as $(x-4)(x+2) = 0$. This means that either $x-4 = 0$ or $x+2 = 0$. Solving for $x$ in each case, we get $x = 4$ or $x = -2$. Since the question asks for a solution to the equation, the answer is 4.