Precalculus Examples

$g (- 4) = x^{2} + 5$

Step 1

Replace the variable $x$ with $- 4$ in the expression.

$g (- 4) = {(- 4)}^{2} + 5$

Step 2

Simplify the result.

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Step 2.1

Raise $- 4$ to the power of $2$ .

$g (- 4) = 16 + 5$

Step 2.2

Add $16$ and $5$ .

$g (- 4) = 21$

Step 2.3

The final answer is $21$ .

$21$

Step 3