Question

\(\left|2X+1\right|=0\)

tìm x biết

Answer 1

\(\Rightarrow2x+1=0\Leftrightarrow x=-\dfrac{1}{2}\)

Answer 2

`|2x+1|=0`

\(\Rightarrow\left[{}\begin{matrix}2x+1=0\\2x+1=-0\end{matrix}\right.\)

`=>`\(\left[{}\begin{matrix}2x=-1\\2x=-1\end{matrix}\right.\)

`=>x=-1/2`