Diketahui matriks A=[ 3 5 -6] [ 2 -4 1] [ 1 6 2]. determinan matriks A adalah

A = ( 3 5 -6 ) 3 5
( 2 -4 1 ) 2 -4
( 1 6 2 ) 1 6
Det A = (3 x -4 x 2 + 5 x 1 x 1 + -6 x 2 x 6) - (5 x 2 x 2 + 3 x 1 x 6 + -6 x -4 x 1)
= (-24 + 5 + -72) - (20 + 18 + 24)
= -91 - 62
= - 153