Answer
$=9(x-5)(x+1)$
Work Step by Step
$9x^2-36x-45$
- factor out the 9
=$9(x^2-4x-5)$
factors that multiply to -5 and add to -4, are integers -5,+1
=$9(x-5)(x+1)$
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 1 - Section 1.2 - Exponents and Radicals - 1.2 Exercises - Page 24: 103
Update this answer!
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.
