Answer
We have to check the solutions since some solutions might not end up with the result we originally found.
Work Step by Step
We might have an extraneous solution. Extraneous solutions would make the original problem invalid.
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 12 - Section 12.8 - Exponential and Logarithmic Equations and Problem Solving - Exercise Set - Page 898: 57
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