Question

Calculati:


a) $\frac{5}{\sqrt{5}} - \sqrt{5} + 0,(3) x/ori \frac{3}{5}$


b) $-3\frac{1}{3} + {17,3} + [3,(6)] + {-1,7}$

(partea intreaga si partea fractionara), {17,3},{-1,7} sunt intre acolade


c) $-\sqrt[7]{3} - (-\sqrt[5]{3}) + (-\sqrt[12]{3}) - (+\sqrt[2]{3})$

Answer 1

$\it a)\ \dfrac{5}{\sqrt5}-\sqrt5+0,(3)\cdot\dfrac{3}{5}=\sqrt5-\sqrt5+\dfrac{3}{9}\cdot\dfrac{3}{5}=\dfrac{1}{5}\\ \\ \\ b)\ -3\dfrac{1}{3}+\{17,3\}+[3,(6)]+\{1,7\}=-3\dfrac{1}{3}+0,3+3+0,7=-\dfrac{1}{3}+1=\dfrac{2}{3}$