raguragu untuk jawab pertanyaan ini

det(K) = {(2)(1)(1)+(5)(0)(-1)+(3)(-4)(4)-[(3)(1)(-1)+(2)(0)(4)+(5)(-4)(1)]}
det(K) = { (2+0-48) - (-3+0-20) }
det(K) = -46-(-23)
det(K) = -46+23
det(K) = -23