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 1-9 - Cumulative Review - Page 625: 25



Work Step by Step

We know the following: $$ (f-g)(x)=f(x)-g(x)$$ Thus, plugging in $f(x)$ and $g(x)$ and combining like terms, we find: $$ x^2+3x-\left(9-3x\right)\\ x^2+3x-9+3x\\ x^2+6x-9$$
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