Question #N691
The function $f(x)$ is defined by $f(x) = \frac{x^2 - 4}{x + 2}$. For what value of $x$ is $f(x)$ undefined?
A. -2
B. 2
C. 4
D. 8
Correct Answer is: A
A function is undefined when the denominator is equal to zero. The denominator of the given function, $x + 2$, is equal to zero when $x = -2$. Therefore, $f(x)$ is undefined for $x = -2$.