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[-3 1 2]
[ 5 4 0] Nah nanti akan ditambahkan 2 baris pertama dan kedua lagi
[ 1 3 2]
[-3 1 2]-3 1]
[ 5 4 0] 5 4] Lalu dikalikan silang mulai dr -3x4x2 dan seterusnya
[ 1 3 2] 1 3]
Hasil
= (-3x4x2 + 1x0x1 + 2x5x3) - (2x4x1 + (-3)x0x3 + 1x5x2)
= (-24 + 0 + 30) - (8 + 0 + 10)
= 6 - 18
= -12
Jadi hasil dari determinan matriks ordo 3x3 di atas adalah -12