Question

CUM SE REZOLVA:
$\frac{15}{ \sqrt{3}* \sqrt{5} }$

Answer 1

$\frac{15}{ \sqrt{3}\cdot \sqrt{5} }= \frac{15}{ \sqrt{3\cdot5} } = \frac{15}{ \sqrt{15} }= \frac{15 \sqrt{15} }{ \sqrt{15}\cdot \sqrt{15} }= \frac{15 \sqrt{15} }{15} = \boxed{ \sqrt{15} }$

Answer 2

 $\frac{15}{\sqrt{3\cdot5}}=\frac{15\sqrt{15}}{15}=\sqrt{15}$