`|x+5|=10` `⇒x+5=±10` \(⇒\left[ \begin{array}{l}x+5=10⇒x=5\\x+5=-10⇒x=-15\end{array} \right.\) `Vậy` `x∈{5;-15}` Bình luận
|x+5|=10 có 2 th
th 1:x+5=10
x=10-5
x=5
th2:x+5=-10
x=-10-5
x=-15
vậy x bằng 5 hoặc -15
`|x+5|=10`
`⇒x+5=±10`
\(⇒\left[ \begin{array}{l}x+5=10⇒x=5\\x+5=-10⇒x=-15\end{array} \right.\)
`Vậy` `x∈{5;-15}`