\(25-y^2=8\left(x-2012\right)^2\)
Ta có: \(\left\{{}\begin{matrix}8\left(x-2012\right)^2\ge0\\8\left(x-2012\right)^2⋮8\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}25-y^2\ge0\Leftrightarrow y^2\le25\\25-y^2⋮8\end{matrix}\right.\)
\(\Leftrightarrow25-y^2=9\Leftrightarrow y=3\)
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