[tex]3.\\a)^{9)}\frac{5}{11}=\frac{9*5}{9*11}=\frac{45}{99} \\b)^{\sqrt{5})}\frac{\sqrt{5}}{3}=\frac{\sqrt{5}*\sqrt{5}}{\sqrt{5}*3}=\frac{5}{3\sqrt{5}}\\ c)^{x)}\frac{x}{x+1}=\frac{x*x}{x(x+1)}=\frac{x^2}{x^2+x}\\ d)^{-2x)}\frac{x}{x^2+1}=\frac{-2x*x}{-2x(x^2+1)}=\frac{2x^2}{2x^3+2x}[/tex]
