Question

tìm x:
|x+2,3|-3=0

Answer 1

\(\left|x+2.3\right|-3=0\)

\(\Leftrightarrow\left|x+2.3\right|=3\)

\(\Leftrightarrow\left[{}\begin{matrix}x+2.3=3\\x+2.3=-3\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=0.7\\x=-5.3\end{matrix}\right.\)

Answer 2

⇒|x+2,3|=3

⇒\(\left[{}\begin{matrix}x+2,3=3\\x+2,3=-3\end{matrix}\right.\)⇒\(\left[{}\begin{matrix}x=0,7\\x=-5,3\end{matrix}\right.\)