\(\left(x-2\right)^2\left(x-9\right)=0\)
\(\Leftrightarrow\)\(\left[{}\begin{matrix}\left(x-2\right)^2=0\\x-9=0\end{matrix}\right.\)\(\Leftrightarrow\)\(\left[{}\begin{matrix}x-2=0\\x-9=0\end{matrix}\right.\)\(\Leftrightarrow\)\(\left[{}\begin{matrix}x=2\\x=9\end{matrix}\right.\)
KL:............