Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 2 - Functions, Equations, and Graphs - 2-1 Relations and Functions - Practice and Problem-Solving Exercises - Page 66: 35

Answer

$-42$.

Work Step by Step

If $f(x)=3x-21$ and $g(x)=3x+21$, then we can get $f(x)-g(x)=(3x-21)-(3x+21)$ by substituting. From $(3x-21)-(3x+21)$, we can distribute -1 to the terms in the second set of parentheses. That gives $3x-21-3x-21=-42$.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.

GradeSaver will pay $15 for your literature essays
GradeSaver will pay $25 for your college application essays
GradeSaver will pay $50 for your graduate school essays – Law, Business, or Medical
GradeSaver will pay $10 for your Community Note contributions
GradeSaver will pay $500 for your Textbook Answer contributions