Precalculus Examples

$h (n) = 2 n - 4$ $g (n) = n - 2$ Find $h (n) + g (n)$

Step 1

Replace the function designators in $h (n) + g (n)$ with the actual functions.

$2 n - 4 + n - 2$

Step 2

Simplify $2 n - 4 + n - 2$ .

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Step 2.1

Remove parentheses.

$2 n - 4 + n - 2$

Step 2.2

Add $2 n$ and $n$ .

$3 n - 4 - 2$

Step 2.3

Subtract $2$ from $- 4$ .

$3 n - 6$