ĐK \(x^2-\frac{1}{2x}+\frac{1}{16}\ge0\)
Pt \(\Rightarrow x^2-\frac{1}{2x}+\frac{1}{16}=\left(\frac{1}{4}-x\right)^2\)với \(x\le\frac{1}{4}\)
\(\Rightarrow-\frac{1}{2x}=-\frac{1x}{2}\Rightarrow x^2=1\Rightarrow\orbr{\begin{cases}x=1\left(l\right)\\x=-1\left(tm\right)\end{cases}}\)
Vậy \(x=-1\)