Precalculus Examples

$f (x) = \frac{x - 4}{x^{2} - 16}$

Step 1

Set $\frac{x - 4}{x^{2} - 16}$ equal to $0$ .

$\frac{x - 4}{x^{2} - 16} = 0$

Step 2

Solve for $x$ .

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Step 2.1

Set the numerator equal to zero.

$x - 4 = 0$

Step 2.2

Add $4$ to both sides of the equation.

$x = 4$

Step 2.3

Exclude the solutions that do not make $\frac{x - 4}{x^{2} - 16} = 0$ true.

$No solution$