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Let A=[[3,2,1],[1,-3,0],[1,2,0]] .If a(i...

Let `A=[[3,2,1],[1,-3,0],[1,2,0]]` .If `a_(ij)` is an element of A and `c_(ij)` is the cofactor of `a_(ij)` for all i,j, then `sum_(ilej,jle3)(a_(ij)c_(ij))=lambda` , then `(lambda)/(3)` equals

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