#### Answer

$7$

#### Work Step by Step

Use the FOIL method to multiply the binomials.
$6-i\sqrt{6}+i\sqrt{6}-i^2$
Substitute $-1$ for $i^2$. Also, add/subtract like terms.
$6-(-1)$
Simplify.
$7$

Published by
Pearson

ISBN 10:
0321671791

ISBN 13:
978-0-32167-179-0

$7$

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