Answer
$r^{2}+6r+9$
Work Step by Step
$(r+3)^{2}=$
...square the binomial.
$=r^{2}+2(r)(3)+3^{2}$
...simplify.
=$r^{2}+6r+9$
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 - Mid-Chapter Quiz - Page 510: 18
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