Need to find what is the main minor of the square matrix?

Question

Programming

Need to find what is the main minor of the square matrix?

Answer 1

I understand that this is suitable
math1.ru/education/matrix/minor.html

Answer 2

The major minor is the square submatrix taken from the top left corner. Total principal minors for a square matrix of order N N-1 pieces - matrices 1x1 2x2 3x3 4x4 .... N-1xN-1

Answer 3

>Need to find what is the principal minor of the square matrix?
Well, you decide whether you want it or not :)