Precalculus Examples

$f (x) = 2 - x$ , $g (x) = 3 x + 1$ , $(f + g)$

Step 1

Replace the function designators in $f + g$ with the actual functions.

$2 - x + 3 x + 1$

Step 2

Simplify $2 - x + 3 x + 1$ .

Tap for more steps...

Step 2.1

Simplify the expression.

Tap for more steps...

Step 2.1.1

Remove parentheses.

$2 - x + 3 x + 1$

Step 2.1.2

Add $2$ and $1$ .

$- x + 3 x + 3$

Step 2.2

Add $- x$ and $3 x$ .

$2 x + 3$