If |[a+b,b+c,c+a],[c+a,a+b,b+c],[b+c,c+a...

If `|[a+b,b+c,c+a],[c+a,a+b,b+c],[b+c,c+a,a+b]|=t X` det of circulant matrix whose whose elemnts of the first column are a,b,c then t equals

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