#### Answer

$8\sqrt 7$

#### Work Step by Step

$5\sqrt 7+3\sqrt 7=8\sqrt 7$
Combine like radicals, in this case add 5 and 3 together.

Published by
Pearson

ISBN 10:
0321726391

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

$8\sqrt 7$

$5\sqrt 7+3\sqrt 7=8\sqrt 7$
Combine like radicals, in this case add 5 and 3 together.

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