Question: 4. Consider the matrix 9 11 A = 3 2 6 10 To show that the expansion of | A| by an alien cofactor is

4. Consider the matrix 9 11 A = 3 2 6 10 To show that the expansion of | A| by an alien cofactor is zero (property 6 of determi nants), calculate _;-1083|C2); that is, expand |A| by using its third-column elements but the cofactors of the second-column elements

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