Answer
8
Work Step by Step
We square both sides of the equation and solve. Thus:
$ x+ 1 = 25 + x -4 - 10\sqrt{x-4} \\ -20 = -10\sqrt{x-4} \\ 2 = \sqrt{x-4} \\ 4 = x-4 \\ x=8 $
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 9 - Roots and Radicals - 9.5 - Solving Radical Equations - Problem Set 9.5 - Page 425: 46
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