$(2x+8).(x-5)=0$
⇒ \(\left[ \begin{array}{l}2x+8=0\\x-5=0\end{array} \right.\)
⇒ \(\left[ \begin{array}{l}2x=-8\\x=5\end{array} \right.\)
⇒ \(\left[ \begin{array}{l}x=-4\\x=5\end{array} \right.\)
Vậy $x=-4$ hoặc $x=5$
$34-|2x-5|=19$
⇒ $|2x-5|=34-19$
⇒ $|2x-5|=15$
⇒ \(\left[ \begin{array}{l}2x-5=15\\2x-5=-15\end{array} \right.\)
⇒ \(\left[ \begin{array}{l}2x=15+5\\2x=-15+5\end{array} \right.\)
⇒ \(\left[ \begin{array}{l}2x=20\\2x=-10\end{array} \right.\)
⇒ \(\left[ \begin{array}{l}x=10\\x=-5\end{array} \right.\)
Vậy $x=10$ hoặc $x=-5$
