zad.6
[tex]1. \ \sqrt{4900} = \sqrt{70^{2}} = 70\\\\2. \ \sqrt[3]{27x^{12}y^{15}}=(3^{3})^{\frac{1}{3}}\cdot(x^{12})^{\frac{1}{3}}\cdot(y^{15})^{\frac{1}{3}} = 3\cdot x^{4}\cdot y^{5} =3x^{4}y^{5}\\\\3. \ \sqrt{5\frac{2}{3}}:\sqrt{2\frac{1}{25}}=\sqrt{\frac{17}{3}:\frac{51}{25}} =\sqrt{\frac{17}{3}\cdot\frac{25}{51}} = \sqrt{\frac{25}{9}} = \frac{5}{3} = 1\frac{2}{3}\\\\4. \ \sqrt{3\cdot3\cdot4\cdot5\cdot5\cdot4} = \sqrt{3^{2}\cdot4^{2}\cdot5^{2}} = 3\cdot4\cdot5=60[/tex]
[tex]5. \ \sqrt[3]{2}^{9} = (2^{9})^{\frac{1}{3}}=2^{3} = 8[/tex]
