Question

Tìm x: 

/x/ = 1/5 

Giải giúp tui vs

 

Answer 1

x=1/5 hoặc x= -1/5

Answer 2

\(\left|x\right|=\dfrac{1}{5}\Rightarrow\left[{}\begin{matrix}x=\dfrac{1}{5}\\x=-\dfrac{1}{5}\end{matrix}\right.\)

Answer 3

\(\left|x\right|=\dfrac{1}{5}\)

<=> \(\left[{}\begin{matrix}x=\dfrac{1}{5}\left(x\ge\dfrac{1}{5}\right)\left(TM\right)\\x=-\dfrac{1}{5}\left(x< \dfrac{1}{5}\right)\left(TM\right)\end{matrix}\right.\)

Answer 4

\(x\in\left\{\dfrac{1}{5};-\dfrac{1}{5}\right\}\)