College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter P, Prerequisites - Section P.6 - Factoring - P.6 Exercises - Page 43: 71



Work Step by Step

First, factor out the greatest common factor, which is $9$. $9x^{2}-36x-45=9(x^{2}-4x-5)$ Then, use FOIL to factor the trinomial. $9(x^{2}-4x-5)=9(x-5)(x+1)$
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