#### Answer

$3$

#### Work Step by Step

$18 = 2 \times 3^2$
$3 = 3$
So the Great Common Factor is $3$

Published by
Pearson

ISBN 10:
0321726391

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

$3$

$18 = 2 \times 3^2$
$3 = 3$
So the Great Common Factor is $3$

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