Giúp mình rút gọn câu này vs ạ

\[\frac{x}{\sqrt{x}-1}-\sqrt{x}\]

\[=\frac{x(\sqrt{x}+1)}{(\sqrt{x}-1)(\sqrt{x}+1)}-\sqrt{x}\]

\[=(\sqrt{x}-1)(\sqrt{x}+1)=x-1\]

\[=\frac{x(\sqrt{x}+1)}{x-1}-\sqrt{x}\]

\[=\frac{x(\sqrt{x}+1)-\sqrt{x}(x-1)}{x-1}\]

\[=\frac{x\sqrt{x}+x-\sqrt{x}x+\sqrt{x}}{x-1}\]

\[=\frac{x\sqrt{x}+x-x\sqrt{x}+\sqrt{x}}{x-1}\]

\[=\frac{2\sqrt{x}}{x-1}\]