Determinant #2

[blamocur]

Not easy to help someone who gets bored so quickly -- hope you can stay interested for the duration of the second part of the exercise

 

[George Saliaris]

I got something but not sure if it helps :
1st-3rd row same as VA
4th row 20 20 20 21..

 

[blamocur]

I got something but not sure if it helps :
1st-3rd row same as VA
4th row 20 20 20 21..

Can you just post the whole matrix?