College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter P, Prerequisites - Section P.6 - Factoring - P.6 Exercises - Page 43: 77



Work Step by Step

RECALL: $A^2-B^2=(A-B)(A+B)$ The given binomial can be written as: $=7^2-2^2y^2 \\=7^2-(2y)^2$ Factor the binomial using the formula above with $A=7$ and $B=2y$ to obtain: $=(7-2y)(7+2y)$
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