Ononot — For the matrix A = \begin{pmatrix} 2 & 1 & 3 \\ 4 & 5 & 6 \\

Guest Session: 1 Question Remaining. Create Account to save progress.

Determinantsmedium

0:00.0

For the matrix $A = \begin{pmatrix} 2 & 1 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{pmatrix}$ , the minor $M_{23}$ (determinant of the submatrix obtained by deleting row 2, column 3) is $\det\begin{pmatrix} 2 & 1 \\ 7 & 8 \end{pmatrix} = 9$ . What is the cofactor $C_{23}$ ?