[3 0 0 If 42 1-5, find its determinant by expanding along the first row. 2...

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[3 0 0 If 42 1-5, find its determinant by expanding along the first row. 2 5-1 [89 3] If A=57 1, find the cofactors of all element in matrix A. Hence, compute the 6 6 4 determinant by expanding along the first row. [3 0 0 If 42 1-5, find its determinant by expanding along the first row. 2 5-1 [89 3] If A=57 1, find the cofactors of all element in matrix A. Hence, compute the 6 6 4 determinant by expanding along the first row.