College Algebra (10th Edition)

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: 8



Work Step by Step

The determinant of a 2x2 matrix is $ad-bc$. In this case that is $8*2-4*(-3)$ or $16+12$ which equals $28$
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