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: 47

Answer

$4y^{4}-1$

Work Step by Step

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