Rút gọn biểu thức B=2x+2√x/x−1−√x/√x−1(x>0,x≠1)

\(B = \frac{{2\sqrt x (\sqrt x + 1)}}{{(\sqrt x - 1)(\sqrt x + 1)}} - \frac{{\sqrt x }}{{\sqrt x - 1}}\;\;\)

\(\begin{array}{l}B = \frac{{2\sqrt x }}{{\sqrt x - 1}} - \frac{{\sqrt x }}{{\sqrt x - 1}}\;\;\\\;\; = \frac{{\sqrt x }}{{\sqrt x - 1}}\end{array}\)