Algebra Examples

$f (x) = \frac{x^{2} - 4 x - 12}{x + 2}$

Step 1

Set the denominator in $\frac{x^{2} - 4 x - 12}{x + 2}$ equal to $0$ to find where the expression is undefined.

$x + 2 = 0$

Step 2

Subtract $2$ from both sides of the equation.

$x = - 2$

Step 3