Question

radical din 12 supra radical din 20​

Answer 1

$\sqrt{12}$ = 2$\sqrt{3}$

$\sqrt{20}$=2$\sqrt{5}$

$\sqrt{12}$ / $\sqrt{20}$ = 2$\sqrt{3}$ / 2$\sqrt{5}$ = $\sqrt{3}$ / $\sqrt{5}$ (simplifici 2)

rationalizam cu $\sqrt{5}$ si avem

$\sqrt{3}$ x $\sqrt{5}$ / 5 = $\sqrt{15}$/5