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.

RELATED QUESTIONS

find the determinant of (3x3)matrice 5 -2 1 0 6 -4 (answered by Fombitz)
Find the value of the determinant | -2 5 4 | | 3 -2 1 | | 1 6 -3... (answered by MathLover1)
find the determinant of the matrix A=(9 6 2 1 2 3 4 5... (answered by Alan3354)
Compute the determinant 4 0 -1 3 6 -2 -2 5... (answered by Boreal)
what is the determinant of the matrix B= 6 6 2 1 4 3 7 3 6 5 3 0 6 3 0 7... (answered by Fombitz)
Please help find the value of the determinant. -2 5 4 3 -2 1 1 6 -3... (answered by Alan3354)
how do you calculate the determinant of 2 -3 0 4 1 3 0 5... (answered by jim_thompson5910)
Can't solve this determinant 2 5 0 4 1 -2 0 2 3 -1 1 6 4 0 3... (answered by richard1234)
evaluate the following determinant -5, 1, 0 2, -1, 6 5, 3... (answered by Fombitz)