Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 5 - Section 5.6 - Special Products - Exercise Set: 31



Work Step by Step

$(5x+9)^{2}$ Apply the formula for squaring a binomial, which is $(a+b)^{2}=a^{2}+2ab+b^{2}$ Here, $a=5x$ and $b=9$ $(5x+9)^{2}=(5x)^{2}+2(5x)(9)+9^{2}=25x^{2}+90x+81$
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