#### Answer

$1$

#### Work Step by Step

Formula:
ad-bc
$(-2*-2)-(1*3)$
$4-3=1$

Published by
Brooks Cole

ISBN 10:
1305071751

ISBN 13:
978-1-30507-175-9

$1$

Formula:
ad-bc
$(-2*-2)-(1*3)$
$4-3=1$

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