Zadanie 1.
[tex]\frac{\sqrt{5}*\sqrt{20} }{\sqrt{4} }[/tex]= [tex]\frac{\sqrt{100} }{2}[/tex] = [tex]\frac{10}{2}[/tex] = 5
Odp: B
Zadanie 2.
A. [tex]5\sqrt{12}[/tex] : [tex]\sqrt{2}[/tex] = [tex]5\sqrt{12:2}[/tex] = [tex]5\sqrt{6}[/tex] PRAWDA
B. [tex]\sqrt{21}[/tex] * [tex]\sqrt{7}[/tex] = [tex]\sqrt{21*7}[/tex] = [tex]\sqrt{147}[/tex] = [tex]7\sqrt{3}[/tex] PRAWDA
C. [tex]\sqrt[3]{-16}[/tex] : [tex]\sqrt[3]{4}[/tex] = [tex]-\sqrt[3]{16:4}[/tex] = [tex]-\sqrt[3]{4}[/tex] FAŁSZ
D. [tex]2\sqrt[3]{-12}[/tex] * [tex]\sqrt[3]{2}[/tex] = [tex]2*(-\sqrt[3]{12})\sqrt[3]{2}[/tex] = [tex]-2\sqrt[3]{24}[/tex] = [tex]-4\sqrt[3]{3}[/tex] PRAWDA
Odp: C
