a Let A = |d f and suppose that det A = -2. Evaluate the following: e Lg h i (a) det (3A") (b) det (B²A-1) where B = -5 -3 7 -1 a + 26 36 (c) | d+ 2e ƒ 3e g+ 2h i 3h (d) det (3A¬1 + adj(A))

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A:

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