Answer
$99=(9)(11)$
Work Step by Step
$99=$
...write $99$ as a difference of two squares.
$=100-1$
...write each term as a square.
$=10^{2}-1^{2}$
...use the rule for the difference of two squares.
$=(10-1)(10+1)$
...simplify.
$=(9)(11)$
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 - 8-7 Factoring Special Cases - Practice and Problem-Solving Exercises - Page 527: 45
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