Answer
$x=26$
Work Step by Step
$\left|\begin{array}{ll}
x+3 & -6\\
x-2 & -4
\end{array}\right|=(x+3)(-4)-(-6)(x-2)$
$=-4x-12+6x-12=2x-24$
$2x-24=28\qquad/+24$
$2x=52\qquad/\div 2$
$x=26$
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter 6 - Matrices and Determinants - Exercise Set 6.5 - Page 653: 46
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