7-6 1 Use 7 8 5 = 6-3-6 87-6 8 7 1 and 6 7 5 = 0 6 -6 1 7-6 1 -2 0 7 0 = 27 8 5 87 1 767 5 67 8 5 06-3-6 6-3-6 06-6 = 2 ])-7(0 in the cofactor expansion of the matrix given, to find its determinant.

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