Find the determinant of the matrix by the method of expansion by cofactors.Expand using the row 1. $$\left[ \begin{array} { c c c }
- 3 & 2 & 1 \
4 & 5 & 6 \
2 & - 3 & 1
\end{array} \right]$$
A)-73
B)75
C)-75
D)-74
E)-76

Name: Find the determinant of the matrix by the method of expansion by cofactors.Expand using the row 1. \[\left[ \begin{array} { c c c } - 3 & 2 & 1 \\ 4 & 5 & 6 \\ 2 & - 3 & 1 \end{array} \right]\] A)-73 B)75 C)-75 D)-74 E)-76
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Question

Find the determinant of the matrix by the method of expansion by cofactors.Expand using the row 1.​ $$\left[ \begin{array} { c c c } 
- 3 & 2 & 1 \
4 & 5 & 6 \
2 & - 3 & 1
\end{array} \right]$$ ​
A)-73
B)75
C)-75
D)-74
E)-76

Quizplus · Accepted Answer

The Answer is C

Find the Determinant of the Matrix by the Method of Expansion