1.

If \[ab+bc+ca=0\] and \[\left| \,\begin{matrix}    a-x & c & b  \\    c & b-x & a  \\    b & a & c-x  \\ \end{matrix}\, \right|=0\], then one of the value of x is  [AMU 2000]

A. \[{{({{a}^{2}}+{{b}^{2}}+{{c}^{2}})}^{\frac{1}{2}}}\]
B. \[{{\left[ \frac{3}{2}({{a}^{2}}+{{b}^{2}}+{{c}^{2}}) \right]}^{\frac{1}{2}}}\]
C. \[{{\left[ \frac{1}{2}({{a}^{2}}+{{b}^{2}}+{{c}^{2}}) \right]}^{\frac{1}{2}}}\]
D. None of these
Answer» E.


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