#### Answer

$625$

#### Work Step by Step

$(5i)^4 = 5^4 * i ^4 = 625 * 1 = 625$

Published by
Pearson

ISBN 10:
0321726391

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

$625$

$(5i)^4 = 5^4 * i ^4 = 625 * 1 = 625$

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