Ta có:
\(x^{2016}+y^{2016}+z^{2016}=x^{2017}+y^{2017}+z^{2017}=1\)
Ta có: \(0\le x^{2016};y^{2016};z^{2016}\le1\)
\(\Rightarrow0\le x;y;z\le1\)
\(\Rightarrow\left\{{}\begin{matrix}1-x\ge0\\1-y\ge0\\1-z\ge0\end{matrix}\right.\) (1)
Lại có:
\(x^{2016}+y^{2016}+z^{2016}=x^{2017}+y^{2017}+z^{2017}\)
\(\Leftrightarrow x^{2016}\left(1-x\right)+y^{2016}\left(1-y\right)+z^{2016}\left(1-z\right)=0\)
\(\Rightarrow\left\{{}\begin{matrix}1-x=0\\1-y=0\\1-z=0\end{matrix}\right.\) (2)
(1);(2) và đề`=>` 1 trong 3 số x,y,z có 2 số bằng 0, 1 số bằng 1
`=>`\(P=1\)
\(\)