Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 2 - Section 2.3 - The Algebra of Functions - Exercise Set: 59

Answer

$-4$

Work Step by Step

$f(1)=-6, g(1)=-3, f(-1)=3, g(-1)=-2$ $(f+g)(1)=f(1)+g(1)=-6+(-3)=-9$ $(g-f)(-1)=g(-1)-f(-1)=-2-3=-5$ $(f+g)(1)-(g-f)(-1)=-9-(-5)=-9+5=-4$
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