## Algebra 1

Published by Prentice Hall

# Chapter 8 - Polynomials and Factoring - Mid-Chapter Quiz - Page 498: 18

#### Answer

$(r+3)^{2}$=$r^{2}$+9r+9

#### Work Step by Step

In order to simplify the product $(r+3)^{2}$ we must apply the rule that states that $(a+b)^{2}$=$a^{2}$+2ab+$b^{2}$, and we'll set a=r and b=3. Therefore, $(r+3)^{2}$=$r^{2}$+3(r)(3)+$3^{2}$ =$r^{2}$+9r+9

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