Consider the following Gauss elimination: O 0 1 0 1 0 EA → 0 9 |1 0 0 6 1 -6 9 -2 1 0|A → 0 E,E A → 0 1 E, E, E, A = -5 -4 1 0 0 1 0 -4 -3 What is the determinant of A? det(A) =

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