The value of \[\left| \,\begin{matrix} 1 & 1 & 1 \\ bc & ca & ab \\ b+c & c+a & a+b \\ \end{matrix}\, \right|\]is [Karnataka CET 2004]

The value of \[\left| \,\begin{matrix} 1 & 1 & 1 \\ bc & c

1.	The value of \[\left\| \,\begin{matrix} 1 & 1 & 1 \\ bc & ca & ab \\ b+c & c+a & a+b \\ \end{matrix}\, \right\|\]is [Karnataka CET 2004]
A.	1
B.	0
C.	\[(a-b)(b-c)(c-a)\]
D.	\[(a+b)(b+c)(c+a)\]
Answer» D. \[(a+b)(b+c)(c+a)\]

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The value of \[\left| \,\begin{matrix} 1 & 1 & 1 \\ bc & ca & ab \\ b+c & c+a & a+b \\ \end{matrix}\, \right|\]is [Karnataka CET 2004]

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