\(y=2\left|x-3\right|-x-2=\left\{{}\begin{matrix}x-8\left(x\ge3\right)\\4-3x\left(x\le3\right)\end{matrix}\right.\)
\(y\ge-5\Rightarrow m< -5\) thì pt vô nghiệm
\(2\sqrt{x^2-6x+9}\ge x\Leftrightarrow2\sqrt{x^2-6x+9}-x-2\ge-2\)
\(\Rightarrow\left[{}\begin{matrix}x\ge6\\x\le2\end{matrix}\right.\)