[tex] \dfrac{3}{\sqrt{11}} = [/tex]
[tex] = \dfrac{3}{\sqrt{11}} \times \dfrac{\sqrt{11}}{\sqrt{11}} [/tex]
[tex] = \dfrac{3\sqrt{11}}{\sqrt{11} \times \sqrt{11}} [/tex]
[tex] = \dfrac{3\sqrt{11}}{\sqrt{121}} [/tex]
[tex] = \dfrac{3\sqrt{11}}{11} [/tex]
