If A is square matrix of order 3 such...

If `A` is square matrix of order 3 such that `|a d j\ A|=64` , find `|A|` .

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We know that `|adj A|= |A|^(n-1),`
where n is the order of the matrix
`|A|^2=64 `
Or,` |A|=+-8`

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