Algebra Examples

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

Step 1

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

$- x - 2 + 2$

Step 2

Remove parentheses.

$- x - 2 + 2$

Step 3

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.

Interval Notation:

$(- \infty, \infty)$

Set-Builder Notation:

${x | x \in ℝ}$

Step 4