Упростите выражение: 1) 3√5 * √15 , 2) \frac{6}{√3} ,3) \frac{√48}{√3} , 4)...

$3\sqrt{5}*\sqrt{15}=3\sqrt{5}*\sqrt{3*5}=3*\sqrt{3}*\sqrt{5}*\sqrt{5}=3*5*\sqrt{3}=15\sqrt{3}$

$\frac{6}{\sqrt{3}}=\frac{2*3}{\sqrt{3}}=\frac{2*\sqrt{3}*\sqrt{3}}{\sqrt{3}}=2\sqrt{3}$

$\frac{\sqrt{48}}{\sqrt{3}}=\sqrt{\frac{48}{3}}=\sqrt{16}=\sqrt{4^2}=4$

$\frac{8\sqrt{32}}{2\sqrt{72}}=\frac{2*4*\sqrt{16*2}}{2*\sqrt{36*2}}=\frac{4\sqrt{16}*\sqrt{2}}{\sqrt{36}*\sqrt{2}}=\frac{4*\sqrt{4^2}}{\sqrt{6^2}}=\frac{4*4}{6}=\frac{8}{3}$