Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Appendix E - Exercise Set: 36

Answer

$x = 4$

Work Step by Step

The determinant is: $D = 6 \times x - 1 \times (-2)$ and we know that $D=26$ Therefore $6 \times x - 1 \times (-2) = 26$ $6x +2 = 26$ $6x = 24$ $x = 4$
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