Choose the one alternative that best completes the statement or answers the question.
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

Question

Choose the one alternative that best completes the statement or answers the question.
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

Quizplus · Accepted Answer

The value of the determinant is calculated as $3 \times 2 - (-1) \times (-1) = 6 - 1 = 5$.

Choose the One Alternative That Best Completes the Statement or Answers