Find Where Undefined/Discontinuous f(x)=(x^2-3x-28)/(x+4)

$f (x) = \frac{x^{2} - 3 x - 28}{x + 4}$

Step 1

Set the denominator in $\frac{x^{2} - 3 x - 28}{x + 4}$ equal to $0$ to find where the expression is undefined.