Using Cofactors of elements of third col...

Using Cofactors of elements of third column, evaluate `Delta=|1x y z1y z x1z x y|`

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The correct Answer is:

`A_(13)=z-y`, `A_(23)=x-z`, `A_(33)=y-x` ;
`Delta=xy^(2)-z^(2)x-x^(2)y+zx^(2)+yz^(2)-y^(2)z`.

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