Precalculus Examples

$f (x) = 4 x$ , $g (x) = 3 x + 1$

Distribute the value across the operation.

$f (x) + g (x)$

Evaluate $f (x)$ .

Tap for more steps...

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

$f (x) = 4 (x)$

Simplify the result.

Tap for more steps...

Multiply $4$ by $x$ .

$f (x) = 4 x$

The final answer is $4 x$ .

$4 x$

Evaluate $g (x)$ .

Tap for more steps...

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

$g (x) = 3 (x) + 1$

Simplify the result.

Tap for more steps...

Multiply $3$ by $x$ .

$g (x) = 3 x + 1$

The final answer is $3 x + 1$ .

$3 x + 1$

Compose the result function for $f (x) + g (x)$ by replacing the function designators with the actual functions.

$4 x + (3 x + 1)$

Simplify.

Tap for more steps...

Remove parentheses.

$4 x + (3 x + 1)$

Remove unnecessary parentheses.

$4 x + 3 x + 1$

Add $4 x$ and $3 x$ .

$7 x + 1$

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.

$(- \infty, \infty)$

${x | x \in ℝ}$

Enter YOUR Problem