Finite Math Examples

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

Step 1

Replace the variable $x$ with $- 2$ in the expression.

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

Step 2

Simplify the result.

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Step 2.1

Simplify the numerator.

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Step 2.1.1

Raise $- 2$ to the power of $2$ .

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

Step 2.1.2

Subtract $4$ from $4$ .

$f (- 2) = \frac{0}{- 2 - 2}$

Step 2.2

Simplify the expression.

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Step 2.2.1

Subtract $2$ from $- 2$ .

$f (- 2) = \frac{0}{- 4}$

Step 2.2.2

Divide $0$ by $- 4$ .

$f (- 2) = 0$

Step 2.3

The final answer is $0$ .

$0$

Step 3