Zadanie 8
3(\sqrt[3]{-4}+2\sqrt2)-(\sqrt[3]{4}-3\sqrt2)=-3\sqrt[3]4+6\sqrt2-\sqrt[3]4+3\sqrt2=9\sqrt2-4\sqrt[3]4
Zadanie 9
\frac{\sqrt6*\sqrt3}{\sqrt2}=\sqrt{\frac{18}{2}}=\sqrt9=3
odp. C
Zadanie 10
\sqrt{4,8}*\sqrt3=\sqrt{14,4} fałsz
\sqrt{3,2}:\sqrt{0,8}=\sqrt{\frac{3,2}{0,8}}=\sqrt4=2 prawda
\sqrt{24}-\sqrt6=\sqrt4*\sqrt6-\sqrt6=2\sqrt6-\sqrt6=\sqrt6 prawda