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# Determinant of a $3\times3$ Matrix

ALGEBR-IB1FL4

Evaluate the determinant of the following $3 \times 3$ matrix:

$$\left| \begin{array}{ccc} -1 & 2 & 1\\\ 2 & 3 & 5\\\ -1 & 2 & 1 \end{array} \right|$$

A

0

B

1

C

3

D

5