Question #N695
If $x^2 - 2x - 8 = 0$, what is the value of $x$?
A. -4
B. -2
C. 2
D. 4
Correct Answer is: D
Factoring the quadratic equation gives us (x - 4)(x + 2) = 0. Setting each factor equal to zero, we get x - 4 = 0 or x + 2 = 0. Solving for x in each equation gives us x = 4 or x = -2. Therefore, x = 4 is a solution to the equation.