Ответ:

  1. \(\frac{\sqrt{18}}{\sqrt3}=\sqrt{\frac{18}{3}}=\sqrt6\).
  2. \(\frac{\sqrt{14}}{\sqrt7}=\sqrt2\).
  3. \(\frac{\sqrt{24}}{\sqrt8}=\sqrt3\).
  4. \(\frac{\sqrt{39}}{\sqrt{13}}=\sqrt3\).