Long description
The matrices are as follows.
Original matrix
Row 1: 3, 7, 5
Row 2: 2, 0, 3
Row 3: 4, 1, 8
Matrix of cofactors
Row 1: negative 3, negative 4, 2
Row 2: negative 51, 4, 25
Row 3: 21, 1, negative 14
A note mentions that the matrix is from Table M5.1.
Adjoint of the matrix
Row 1: negative 3, negative 51, 21
Row 2: negative 4, 4, 1
Row 3: 2, 25, negative 14
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