# Precalculus Examples

,

Distribute the value across the operation.

Replace the variable with in the expression.

Simplify the result.

Remove parentheses around .

The final answer is .

Compose the result function for by replacing the function designators with the actual functions.

Simplify each term.

Apply the distributive property.

Multiply by to get .

Simplify by adding terms.

Remove unnecessary parentheses.

Subtract from to get .

Simplify by subtracting numbers.

Add and to get .

Subtract from to get .

Since there are no variables in the expression, the domain is all real numbers.