#### Answer

$4\geq x \text{ or } x \le 4$

#### Work Step by Step

We know that the square root function is undefined for negative numbers, hence the expression inside the square root sign must be non-negative.
Thus:
$8-2x\geq0\\8\geq2x\\4\geq x.$

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Published by
Pearson

ISBN 10:
0-32197-907-9

ISBN 13:
978-0-32197-907-0

$4\geq x \text{ or } x \le 4$

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