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Evaluate |[0,c,b] , [c,0,a] , [b,a,0]| h...

Evaluate `|[0,c,b] , [c,0,a] , [b,a,0]|` hence show that `|[0,c,b] , [c,0,a] , [b,a,0]|^2`= `|[b^2+c^2,ab,ac] , [ab,c^2+a^2,bc] , [ca,bc,a^2+b^2]|`=`4a^2b^2c^2`

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