Calculus with Applications (10th Edition)

Published by Pearson
ISBN 10: 0321749006
ISBN 13: 978-0-32174-900-0

Chapter R - Algebra Reference - R.2 Factoring - R.2 Exercises: 7

Answer

$$(z+4)(z+5)$$

Work Step by Step

Consider all the possible pairs of factors of $20$. Then select the pair that sum to $9$: $$4\times 5 = 20$$ $$4+5=9$$ $$z^2+9z+20=(z+4)(z+5)$$
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.