Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 4 - Polynomials - 4.4 Addition and Subtraction of Polynomials - 4.4 Exercise Set: 25

Answer

$4.2t^3+3.5t^2-6.4t-1.8$

Work Step by Step

Add the polynomials, then combine like terms to obtain: $=5.3t^2-6.4t-9.1+4.2t^3-1.8t^2+7.3 \\=4.2t^3+(5.3t^2-1.8t^2)-6.4t+(-9.1+7.3) \\=4.2t^3+3.5t^2-6.4t-1.8$
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