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(2 1)(1 -2) - ( -8 -2 )
(-5 4)(-2 3) ( 4 26),maka
(0 -1)- (-8 -2)
(-13 22) (4 26),sama dengan
(8 1)
(-17 -4),adalah matrix N,
jadi det N = (8×-4)-(1×-17) = -31-(-17)
= -14
semoga membantu