Answer
$9(x+1)(x-5)$
Work Step by Step
$Factor$ $the$ $expression$ $completely:$
$9x^2-36-45$
Factor out a 9 from all terms
$9(x^2-4-5)$
Factor the trinomial in the parenthesis into binomials
$9(x^2-4-5) = 9(x+1)(x-5)$
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 1.3 - Algebraic Expressions - 1.3 Exercises - Page 34: 103
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