Algebra 2 (1st Edition)

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



Work Step by Step

Using Cramer's rule to find the determinant, we obtain: $$\det \begin{pmatrix}3&-2\\ 4&1\end{pmatrix} \\ 3\cdot \:1-\left(-2\right)\cdot \:4 \\ 11$$
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