Answer
$c^{2}+6c+9$
Work Step by Step
$(c+3)(c-3)=(c+3)^{2}$
...square the binomial.
$=c^{2}+2(c)(3)+3^{2}$
...simplify.
$=c^{2}+6c+9$
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 - 8-4 Multiplying Soecial Cases - Lesson Check - Page 507: 1
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