Question 176596
The determinant of a 3x3 matrix [A], represented by,
[A]={{{(matrix(3,3, a[11],a[12],a[13],a[21],a[22],a[23],a[31],a[32],a[33]))}}}
is
{{{det(A)=a[11](a[22]a[33]-a[23]a[32])-
a[12](a[21]a[33]-a[23]a[31])+
a[13](a[21]a[32]-a[22]a[31])}}}
Your final answer should be 
{{{det(A)=597}}} 
Please re-post if you get stuck or don't get the same answer.