# Precalculus Examples

,
Distribute the value across the operation.
Evaluate .
Replace the variable with in the expression.
Simplify the result.
Remove parentheses.
Evaluate .
Replace the variable with in the expression.
Simplify the result.
Multiply by .
Compose the result function for by replacing the function designators with the actual functions.
Rewrite the division as a fraction.
Solve to find the values of that make undefined.
Set up the equation to solve for .
Divide each term by and simplify.
Divide each term in by .
Reduce the expression by cancelling the common factors.
Cancel the common factor.
Divide by .
Divide by .
The domain is all values of that make the expression defined.