Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 5 - Section 5.3 - Addition and Subtraction of Polynomials - Exercise: 21

Answer

$7a^2-10a+1$

Work Step by Step

Group all the like terms together before adding. $(5a^2-7a+5)+(2a^2-3a-4)$ $=(5a^2+2a^2-7a-3a+5-4)$ $=7a^2-10a+1$
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