If A is a square matrix of order 3 and Aij is a co factor of the element , then - Maths - Determinants

Question

If A is a square matrix of order 3 and Aij is a co factor of the
element , then the value of a21A11+a22A12+a23A13 is

Alok Kumar · Accepted Answer

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If A is a square matrix of order 3 and Aij is a co factor of the element , then the value of a21A11+a22A12+a23A13 is