### Home > INT3 > Chapter 7 > Lesson 7.2.5 > Problem 7-117

7-117.

Use the functions and

*to complete the parts below.*

What is

?Substitute

for .

Write an expression for

. Multiply and distribute

by the expression.

What is

?

Write an expression for

.

Write an expression for

.Substitute

forin the expression.

Write an expression for

.Remember to distribute the negative sign to all terms in

.

Describe the domain of

all real numbers

Describe the domain of

See part (g).