Algebra Examples

$f (x) = x + 2$ and $g (x) = x - 2$

Step 1

Set up the composite result function.

$g (f (x))$

Step 2

Evaluate $g (x + 2)$ by substituting in the value of $f$ into $g$ .

$g (x + 2) = (x + 2) - 2$

Step 3

Combine the opposite terms in $(x + 2) - 2$ .

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Step 3.1

Subtract $2$ from $2$ .

$g (x + 2) = x + 0$

Step 3.2

Add $x$ and $0$ .

$g (x + 2) = x$