ĐKXĐ: \(x\ge0,x\ne1\)
\(\frac{x}{\sqrt{x}-1}-\frac{2x-\sqrt{x}}{x-\sqrt{x}}\)
\(=\frac{x}{\sqrt{x}-1}-\frac{\sqrt{x}\left(2\sqrt{x}-1\right)}{\sqrt{x}\left(\sqrt{x}-1\right)}\)
\(=\frac{x}{\sqrt{x}-1}-\frac{2\sqrt{x}-1}{\sqrt{x}-1}\)
\(=\frac{x-(2\sqrt{x}-1)}{\sqrt{x}-1}\)\(=\frac{x-2\sqrt{x}+1}{\sqrt{x}-1}\)
\(=\frac{\left(\sqrt{x}-1\right)^2}{\sqrt{x}-1}\)\(=\sqrt{x}-1\)