Odpowiedź:
Zad 12.
[tex]\sqrt{81\cdot 100\cdot 25} = 9\cdot 10\cdot 5 = 450[/tex]
Zad 13.
[tex]\sqrt{2+\sqrt{2+\sqrt{4}}} = \sqrt{2+\sqrt{2 + 2}} = \sqrt{2 + \sqrt{4}} = \sqrt{2 + 2} = \sqrt{4} = 2[/tex]
Zad 14.
[tex]\sqrt[3]{4 \sqrt[3]{4 \sqrt[3]{8}}} = \sqrt[3]{4 \sqrt[3]{4 \cdot 2}} = \sqrt[3]{4 \sqrt[3]{8}} = \sqrt[3]{4\cdot 2} = \sqrt[3]{8} = 2[/tex]
