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find (a) Given that a b C det 8 16 24 = -40 d e f -4 40 -12 (b) det a -5b =

find (a) Given that a b C det 8 16 24 = -40 d e f -4 40 -12 (b) det a -5b = 120 d -5e f a bc det d ef=5 1 2 3

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