#### Answer

C

#### Work Step by Step

Find the greatest common factor. Find the factors of each term and multiply the factors that are common to all the terms.
$21n^3=7×3×n×n×n$
$18n^2=6×3×n×n$
$GCF=3×n×n=3n^2$

Chegg costs money, GradeSaver solutions are free!

Published by
Prentice Hall

ISBN 10:
0133281140

ISBN 13:
978-0-13328-114-9

C

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

Update this answerAfter 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.