# Precalculus Examples

Find the Domain of the Difference
,
Find the difference of the functions.
Replace the function designators with the actual functions in .
Simplify each term.
Apply the distributive property.
Multiply by .
Multiply by .
Subtract from .
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:
Set-Builder Notation: