1.

(b) If a, is the element in the ith row and jthcolumn of a 3rd order determinant whosevalue is 1 and Cij is the cofactor of aij thenwhat is the value of a12 (C11 + C21) +a12(C12+ C22) + a13 (C13 + C23) ?​

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Step-by-step EXPLANATION:

yyyyyyttggggttggggfggggggggttgttgggg*ggggggfffffffcghhhygg



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