Answer
$-3$
Work Step by Step
From the given matrix, we have $|A|=(-5)(-1)-(4)(2)=-3$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 9 - Systems and Matrices - Quiz - Page 896: 12
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