#### Answer

$z= ±\sqrt{10}$

#### Work Step by Step

$3z^2=30\\
z^2=10\\
z=±\sqrt{10}$

Published by
Pearson

ISBN 10:
0321726391

ISBN 13:
978-0-32172-639-1

$z= ±\sqrt{10}$

$3z^2=30\\
z^2=10\\
z=±\sqrt{10}$

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