Question

va rog frumos ex 8 si 11​

Answer 1

Exercitiul 8

a) $\displaystyle{ \frac{35}{5\sqrt{3}} = \frac{7}{\sqrt{3}} = \frac{7\sqrt{3}}{3} }$

b) $\displaystyle{ - \frac{36}{4\sqrt{5}} = -\frac{9}{\sqrt{5}} = -\frac{9\sqrt{5}}{5} }$

c) $\displaystyle{ \frac{-33}{-3\sqrt{11}} = \frac{11}{\sqrt{11}} = \frac{11\sqrt{11}}{11} = \sqrt{11} }$

d) $\displaystyle{ \frac{10}{15\sqrt{3}}^{(5} = \frac{2}{3\sqrt{3}} = \frac{2\sqrt{3}}{3\cdot 3} = \frac{2\sqrt{3}}{9} }$

Exercitiul 11 se rezolva la fel. A rationaliza numitorul inseamna a amplifica fractia cu radicalul de la numitor.