b: \(\Leftrightarrow\left[{}\begin{matrix}x-2=-8\\x-2=8\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=-6\\x=10\end{matrix}\right.\)Câu trả lời: b: \(\Leftrightarrow\left[{}\begin{matrix}x-2=-8\\x-2=8\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=-6\\x=10\end{matrix}\right.\)