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 508: 52



Work Step by Step

The side length of the expanded deck is $4(x+5)=4x+20$ The area of the expanded deck is $(4x+20)^{2}$ ...square the binomial. $=(4x)^{2}+2(4x)(20)+20^{2}$ ...simplify. $=16x^{2}+160x+400$ The area of the expanded deck is $16x^{2}+160x+400$.
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