Answer
-2
Work Step by Step
The determinant of a two by two matrix is $ad−bc $ where $a = a_{11}, b=a_{12}, c=a_{21}, d=a_{22}$
$-4*3-2*(-5) = -2$
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter 8 - Section 8.3 - Systems of Linear Equations: Determinants - 8.3 Assess Your Understanding - Page 582: 10
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