Answer
11
Work Step by Step
Using Cramer's rule to find the determinant, we obtain:
$$\det \begin{pmatrix}3&-2\\ 4&1\end{pmatrix} \\ 3\cdot \:1-\left(-2\right)\cdot \:4 \\ 11$$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 3 Linear Systems and Matrices - Chapter Test - Page 227: 23
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