#### Answer

8

#### Work Step by Step

$\sqrt 64=8$, which we know because $8^{2}=8\times8=64$

Published by
Pearson

ISBN 10:
0321969359

ISBN 13:
978-0-32196-935-4

8

$\sqrt 64=8$, which we know because $8^{2}=8\times8=64$

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