Mathematics Determinants Minors and Cofactors

Find the minor of element 7 in the determinant \({\rm{\Delta }} = \left| {\begin{array}{*{20}{c}} 1&4&3\\ 5&6&7\\ 8&9&2 \end{array}} \right|\).

1

23

2

-23

3

24

4

-27

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