\(ĐK:x\ge\dfrac{1}{2}\\ PT\Leftrightarrow2x-1=x+6\sqrt{x}+9\\ \Leftrightarrow x-10=6\sqrt{x}\\ \Leftrightarrow x^2-20x+100=36x\\ \Leftrightarrow x^2-56x+100=0\\ \Delta=3136-400=2736\\ \Leftrightarrow\left[{}\begin{matrix}x=\dfrac{56-12\sqrt{19}}{2}=28-6\sqrt{19}\left(tm\right)\\x=\dfrac{56+12\sqrt{19}}{2}=28+6\sqrt{19}\left(tm\right)\end{matrix}\right.\)