giúp tui nhé mng ơiiiiiiiiiiiii

`3) 2/(2x-6) = (2x-6)/8(đk : x ne 3)`

`<=> (2x-6)(2x-6) = 8.2`

`<=> (2x-6)^2 = 16`

`<=> (2x - 6)^2 = (+-4)^2`

`<=>` \(\left[ \begin{array}{l}2x - 6 = 4\\2x-6 = -4\end{array} \right.\) 

`<=>` \(\left[ \begin{array}{l}2x - 6 = 4\\2x-6 = -4\end{array} \right.\) 

`<=>` \(\left[ \begin{array}{l}2x= 10\\2x = 2\end{array} \right.\) 

`<=>` \(\left[ \begin{array}{l}x=5(tm)\\x=1(tm)\end{array} \right.\) 

Vậy `S = {5;1}`

`#HPHG`