Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 5 - Section 5.4 - Multiplying Polynomials - Exercise Set: 109b

Answer

$9x^2+36x+35$

Work Step by Step

Using $(a+b)(c+d)=ac+ad+bc+bd$ or the FOIL Method, the given expression, $ (3x+5)(3x+7) $, is equivalent to \begin{array}{l}\require{cancel} 9x^2+21x+15x+35 \\\\= 9x^2+36x+35 .\end{array}
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