Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 5 - Review Exercises - Page 400: 72



Work Step by Step

Given:$5x^2-45$ Take the common terms out. $=5(x^2-9)$ Since, $(a-b)(a+b)=a^2-b^2$ or, $=5(x^2-3^2)$ or, $=5(x-3)(x+3)$ Hence, $5(x-3)(x+3)$
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