A) \[(-4,\,4)\]
B) \[(2,\,-4)\]
C) \[(2,\,4)\]
D) \[(2,\,8)\]
Correct Answer: A
Solution :
We have \[\left| \,\begin{matrix} x & 0 & 8 \\ 4 & 1 & 3 \\ 2 & 0 & x \\ \end{matrix}\, \right|\,=0\] \[\therefore \] \[\Delta =x(x-0)-0(4x-6)+8(0-2)\] or \[{{x}^{2}}-16=0\] \[\Rightarrow \] \[x=4,\,-4\].You need to login to perform this action.
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