Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Chapter 3 - Exponents, Polynomials and Functions - 3.2 Combining Functions - 3.2 Exercises: 48

Answer

$5x^2+50x-16$

Work Step by Step

Use the FOIL method on the terms in the two sets of parentheses. Then combine like terms. $(7x-3)(2x+8)-9x^2+8$ $=14x^2+56x-6x-24-9x^2+8$ $=5x^2+50x-16$
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