determinan matrik mohon bantuan nya yg pintar tentang matriks

2x2x3+3x2x2+4x1x1-2x2x4-1x2x2-3x1x3
=12+12+4-16-4-9
=28-29
=-1
maaf coret coret. sambilan makan

( 2 3 4)(2 3)
( 1 2 2)(1 2)
( 2 1 3)(2 1)

(2×2×3)+(3×2×2)+(4×1×1)-(2×2×4)-(1×2×2)-(3×1×3)
=12+12+4-16-4-9
=-1