Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 1 - Section 1.3 - Algebraic Expressions - 1.3 Exercises: 105

Answer

$(7-2y)(7+2y)$

Work Step by Step

Use the Difference of Two Squares to solve. $49-4y^{2}=(7)^{2}-(2y)^{2}=(7-2y)(7+2y)$
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