Question

|x+2|=3-2x

giúp mk nha, thank you!

Answer 1

| x + 2 | = 3 - 2x

\(\Rightarrow\left[{}\begin{matrix}x+2=3-2x\\x+2=-\left(3-2x\right)\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x+2+2x=3\\x+2+2x=-3\end{matrix}\right.\Leftrightarrow}\left[{}\begin{matrix}3x=5\\3x=-5\end{matrix}\right.\Leftrightarrow}\left[{}\begin{matrix}x=\dfrac{5}{3}\\x=-\dfrac{5}{3}\end{matrix}\right.\)

Vậy x = \(\dfrac{5}{3}\) hoặc x = \(-\dfrac{5}{3}\)