sử dụng pp chia khoảng nhé

where

hỏi vị trí thì dùng where nha bạn

fyf

\(\left|2x-4\right|+1=5\)

\(\Rightarrow\left|2x-4\right|=5-1\)

\(\Rightarrow\left|2x-4\right|=4\)

\(\Rightarrow\)\(\left[{}\begin{matrix}2x-4=4\\2x-4=-4\end{matrix}\right.\)

\(\Rightarrow\)\(\left[{}\begin{matrix}2x=4+4\\2x=-4+4\end{matrix}\right.\)

\(\Rightarrow\)\(\left[{}\begin{matrix}2x=8\\2x=0\end{matrix}\right.\)

\(\Rightarrow\)\(\left[{}\begin{matrix}x=4\\x=0\end{matrix}\right.\)