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Find the Determinant of the Matrix by the Method of Expansion

Question 17

Multiple Choice

Find the determinant of the matrix by the method of expansion by cofactors.Expand using the column 2.​ [−3214562−31]\left[ \begin{array} { c c c } - 3 & 2 & 1 \\4 & 5 & 6 \\2 & - 3 & 1\end{array} \right] ​


A) -75
B) 75
C) -73
D) -74
E) -76

Correct Answer:

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