Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 8 - Polynomials and Factoring - 8-7 Factoring Special Cases - Practice and Problem-Solving Exercises - Page 526: 23


The side length of the square is $5r+3$.

Work Step by Step

$25r^{2}+30r+9=$ ...write first and last terms as squares. $=(5r)^{2}+30r+(3)^{2}$ ...does middle term equal $2ab$? $30r=2\cdot(5r)\cdot(3)$ $=(5r)^{2}+2\cdot(5r)\cdot(3)+(3)^{2}$ ...write as the square of a binomial. $=(5r+3)^{2}$
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.