SOLUTION: find the determinant of
1 2 3
4 5 6
2 0 1
Algebra.Com
Question 590094: find the determinant of
1 2 3
4 5 6
2 0 1
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
The determinant is equal to
det A - 2 det B + 3 det C
where A, B, and C are the 2x2 matrices that do not have any element in the same row or column as the 1, 2, 3 in the top row respectively. Recall that the determinant of the matrix
|a b|
|c d|
is ad - bc.
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