Jika matriks a=(1 -3 -2 4) b=(-2 0 1 3) dan c=(3 -1 1 -2), maka a(b-c) adalah

(b – c) = ( -2 0 1 3) – ( 3 -1 1 -2)

= ( -5 1 0 5)

a = ( 1 -3 -2 4)

a(b-c) = ( 1 -3 -2 4) (-5 1 0 5)

= (-5 -14 10 18)

Determinan = (-5).(18) – (10).(-14)

= (-90) – (-140) =50