Compute the Determinant of the Matrix by Cofactor Expansion $$\left[ \begin{array} { r r r } 3 & 1 & 2 \\- 3 & - 1 & - 4 \\6 & 5 & 3\end{array} \right]$$

question 7

Multiple Choice

Compute the determinant of the matrix by cofactor expansion.
- $$\left[ \begin{array} { r r r } 3 & 1 & 2 \\- 3 & - 1 & - 4 \\6 & 5 & 3\end{array} \right]$$

• A) 0
• B) \(- 9\)
• C) 18
• D) \(- 18\)

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