Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Appendix D - Exercise Set: 17

Answer

{$-5,5$}

Work Step by Step

Step 1: $|z|+4=9$ Step 2: Subtracting $4$ to both sides, $|z|+4-4=9-4$ Step 3: $|z|=5$ Step 4: Using the absolute value property, $z=5$ or $z=-5$ Step 5: Therefore, the solution set is {$-5,5$}
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