Solved

Find the Value of the Determinant $\left| \begin{array} { r r } 3 & - 1 \\- 1 & 2\end{array} \right|$

Question 21

Multiple Choice

Find the value of the determinant.
- $\left| \begin{array} { r r } 3 & - 1 \\- 1 & 2\end{array} \right|$

A) -1
B) 5
C) -5
D) 7

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