Rút gọn biểu thức: \(B=\frac{1}{\sqrt{x}+1}-{{\frac{x+2}{x\sqrt{x}+1}}^{{}}}{{^{{}}}^{{}}}\left( x\ge 0 \right)\) A \(\frac{{ – 2}}{{x – \sqrt x + 1}}\) B \(\frac{{ – 1}}{{x – \sqrt x + 1}}\) C \(\frac{{ 1}}{{x – \sqrt x + 1}}\) D \(\frac{{ – 3}}{{x – \sqrt x + 1}}\)
Rút gọn biểu thức: \(B=\frac{1}{\sqrt{x}+1}-{{\frac{x+2}{x\sqrt{x}+1}}^{{}}}{{^{{}}}^{{}}}\left( x\ge 0 \right)\) A \(\frac{{ – 2}}{{x – \sqrt x + 1}}\) B \(\frac{{ – 1}}{{x – \sqrt x + …