Question: 4 a b D = 2 C -1 C 6 If a = -2, b = 4 and c = 5, what is the the

4 a b D = 2 C -1 C 6 If
a = -2, b = 4 and c = 5, what is

4 a b D = 2 C -1 C 6 If a = -2, b = 4 and c = 5, what is the the cofactor of D21?

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