Answer
$(y-11)(y+11)$
Work Step by Step
$y^2-121$
$=y^2-11^2$
Applying the difference of squares formula:
$=(y-11)(y+11)$
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 8 - Polynomials and Factoring - Chapter Test - Page 539: 20
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