Odpowiedź:
[tex]a)\ \ (\sqrt{(-5)^2})^3=5^3=125\\\\b)\ \ (2\sqrt{7})^2+\sqrt[3]{729}=2^2*(\sqrt{7})^2+9=4*7+9=28+9=37\\\\c)\ \ (\frac{2}{3}\sqrt{3})^3=(\frac{2}{3})^3*(\sqrt{3})^3=\frac{8}{27}*\sqrt{27}=\frac{8}{27}*\sqrt{9*3}=\frac{8}{\not27_{9} }*\not3^1\sqrt{3}=\frac{8}{9}\sqrt{3}\\\\d)\ \ 3\sqrt{32}+5\sqrt{18}=3\sqrt{16*2}+5\sqrt{9*2}=3*4\sqrt{2}+5*3\sqrt{2}=12\sqrt{2}+15\sqrt{2}=27\sqrt{2}[/tex]
