Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 5 - Section 5.6 - Special Products - Exercise Set: 48

Answer

$9x^{4}-1$

Work Step by Step

$(3x^{2}+1)(3x^{2}-1)$ To evaluate this product, use the following formula: $(a-b)(a+b)=a^{2}-b^{2}$ Here, $a=3x^{2}$ and $b=1$ $(3x^{2}+1)(3x^{2}-1)=(3x^{2})^{2}-1^{2}=9x^{4}-1$
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