If P=[[1, c, 3],[ 1 , 3, 3],[ 2, 4...

If `P=[[1, c, 3],[ 1 , 3, 3],[ 2, 4, 4]]` is the adjoint of a `3 xx 3` matrix `Q` and det. `(Q)^=4`, then `c` is equal to

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