$\sqrt{\frac{1}{8}} \cdot \sqrt{\frac{25}{2}} \ = \ ?$
Rezolvare
Metoda 1 de calcul
$\sqrt{\frac{1}{8}} \cdot \sqrt{\frac{25}{2}} = \sqrt{\frac{1}{4 \cdot 2}} \cdot \sqrt{\frac{5^{2}}{2}} =>$
$\frac{1}{2} \cdot \sqrt{\frac{1}{2}} \cdot 5 \cdot \frac{1}{2} =>$
$\frac{5}{2} \cdot \frac{1}{2} = \boxed{\frac{5}{4}}$
Metoda 2 de calcul
$\sqrt{\frac{1}{8}} \cdot \sqrt{\frac{25}{2}} = \sqrt{\frac{1}{8} \cdot \frac{25}{2}} =>$
$\sqrt{\frac{25}{16}} = \sqrt{\frac{5^{2}}{4^{2}}} => \boxed{\frac{5}{4}}$
Niciun comentariu:
Trimiteți un comentariu