\left| \begin{array} { l l l } { 1 } & { 1 } & { 1 } \\ { a } & { b } – InterviewSolution

1.	\left\| \begin{array} { l l l } { 1 } & { 1 } & { 1 } \\ { a } & { b } & { c } \\ { b c } & { c a } & { a b } \end{array} \right\| = ( a - b ) ( b - c ) ( c - a )
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