#### Answer

$81$

#### Work Step by Step

$(3i)^{4}=3^{4}\times i^{4}=81\times (i^{2})^{2}=81\times (-1)^{2}=81$

Published by
Pearson

ISBN 10:
0321726391

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

$81$

$(3i)^{4}=3^{4}\times i^{4}=81\times (i^{2})^{2}=81\times (-1)^{2}=81$

You can help us out by revising, improving and updating this answer.

Update this answerAfter you claim an answer you’ll have **24 hours** to send in a draft. An editor
will review the submission and either publish your submission or provide feedback.