`|x^2-1/2|=1/2`
`⇒`\(\left[ \begin{array}{l}x^2-\dfrac{1}{2}=\dfrac{1}{2}\\x^2-\dfrac{1}{2}=\dfrac{-1}{2}\end{array} \right.\)
`⇒`\(\left[ \begin{array}{l}x^2=\dfrac{1}{2}+\dfrac{1}{2}\\x^2=\dfrac{-1}{2}+\dfrac{1}{2}\end{array} \right.\)
`⇒`\(\left[ \begin{array}{l}x^2=\dfrac{2}{2}\\x^2=0\end{array} \right.\)
`⇒`\(\left[ \begin{array}{l}x^2=1^2\\x=0\end{array} \right.\)
`⇒`\(\left[ \begin{array}{l}x=±1\\x=0\end{array} \right.\)
Vậy `x=+-1` hoặc `x=0`
