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 42: 30

Answer

$(x-y-5)(x+y+5)$

Work Step by Step

RECALL: $A^2-B^2=(A-B)(A+B)$ Factor the difference of two squares using the formula above with $A=x$ and $B=y+5$ to obtain: $=[x-(y+5)][x+(y+5)] \\=(x-y-5)(x+y+5)$
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