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: 46

Answer

$14x^2-28x+17$

Work Step by Step

Use the FOIL method on the second and third sets of parentheses. Then combine like terms. $(5x^2+2x-8)+(3x-5)^2$ $=(5x^2+2x-8)+(3x-5)(3x-5)$ $=(5x^2+2x-8)+(9x^2-30x+25)$ $=14x^2-28x+17$
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