Answer
(a) True
(b) False
Work Step by Step
(a) Using $x=-1$:
2-5(-1)=8+(-1)
2--5=8-1
7=7
Which is True.
(b) Using x=1:
2-5(1)=8+1
2-5=8+1
-3=9
Which is False.
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter P, Prerequisites - Section P.8 - Solving Basic Equations - P.8 Exercises - Page 59: 8
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