(2x-10).(5-x)=0 nhanhhhh nha mnnn

Đáp án:

 $(2x-10).(5-x)=0$

$⇔ $ \(\left[ \begin{array}{l}2x-10=0\\5-x=0\end{array} \right.\) $⇔$  \(\left[ \begin{array}{l}2x=10\\x=5\end{array} \right.\) $⇔$  \(\left[ \begin{array}{l}x=5\\x=5\end{array} \right.\) 

$⇔ x=5$

$vậy$ $x=5$