College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter R - Section R.5 - Factoring Polynomials - R.5 Exercises: 82

Answer

$3(1-3x)(1+3x)$

Work Step by Step

Factor out $3$ to obtain: $=3(1-9x^2) \\=3[1^2-(3x)^2]$ RECALL: $a^2-b^2=(a-b)(a+b)$ Use the formula above with $a=1$ and $b=3x$ to factor the binomial and obtain: $=3(1-3x)(1+3x)$
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