Answer
$-12$
Work Step by Step
Use the formula for the determinant and use the 1st row for expansion, we have:
$|A|=2[(4)(-4)-(0)(2)]+4[(1)(-4)-(0)(-1)]+6[(1)(2)-(4)(-1)]
=2[-16]+4[-4]+6[6]=-12$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 10 - Systems of Equations and Inequalities - Chapter Test - Page 817: 18
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