\(\left(x-2\right)^{2012}+\left|y^2-9\right|^{2014}=0\)
Vì \(\left(x-2\right)^{2012}\ge0\forall x\); \(\left|y^2-9\right|^{2014}\ge0\forall y\)
\(\Rightarrow\left(x-2\right)^{2012}+\left|y^2-9\right|^{2014}\ge0\forall x,y\)
mà \(\left(x-2\right)^{2012}+\left|y^2-9\right|^{2014}=0\)( giả thiết )
Dấu " = " xảy ra \(\Leftrightarrow\hept{\begin{cases}x-2=0\\y^2-9=0\end{cases}}\Leftrightarrow\hept{\begin{cases}x=2\\y^2=9\end{cases}}\Leftrightarrow\hept{\begin{cases}x=2\\y=\pm3\end{cases}}\)
Vậy \(x=2\)và \(y=\pm3\)
Ta có: \(\left(x-2\right)^{2012}+\left|y^2-9\right|^{2014}\ge0\left(\forall x,y\right)\)
Dấu "=" xảy ra khi: \(\hept{\begin{cases}\left(x-2\right)^{2012}=0\\\left|y^2-9\right|^{2014}=0\end{cases}}\)
\(\Leftrightarrow\hept{\begin{cases}x=2\\y=\pm3\end{cases}}\)
Vậy \(\left(x;y\right)\in\left\{\left(2;3\right);\left(2;-3\right)\right\}\)
