Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 8 - Polynomials and Factoring - 8-4 Multiplying Soecial Cases - Practice and Problem-Solving Exercises - Page 507: 11

Answer

9$s^{2}$+54s+81

Work Step by Step

Formula: $(a+b)^{2}$=$a^{2}$+2ab+$b^{2}$ We substitute the values in the formula and simplify: $(3s+9)^{2}$=$3s^{2}$+(2)(3s)(9)+$9^{2}$ =3$s^{2}$+54s+81
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