Odpowiedź:
[tex]a) \: 5 = \sqrt{ {5}^{2} } = \sqrt{25} \\ 14 = \sqrt{ {14}^{2} } = 196 \\ \\ b) \: \frac{1}{7} = \sqrt{( \frac{1}{7} {)}^{2} } = \frac{1}{49} \\ \frac{1}{50} = \sqrt{ (\frac{1}{50} {)}^{2} } = \sqrt{ \frac{1}{2500} } \\ \\ c) \: \frac{3}{11} = \sqrt{( \frac{3}{11} {)}^{2} } = \sqrt{\frac{9}{121} } \\ \frac{13}{30} = \sqrt{( \frac{13}{30} {)}^{2} } = \sqrt{ \frac{169}{900} } \\ \\ d) \: 0.2 = \sqrt{(0.2 {)}^{2} } = \sqrt{0.04} \\ 1.5 = \sqrt{(1.5 {)}^{2} } = \sqrt{2.25} [/tex]
[tex]e) \: 2 = \sqrt[3]{ {2}^{3} } = \sqrt[3]{8} \\ 5 = \sqrt[3]{ {5}^{3} } = \sqrt[3]{125} \\ \\ f) \: \frac{1}{3} = \sqrt[3]{ { \frac{1}{3} })^{3} } = \sqrt[3]{ \frac{1}{27} } \\ \frac{1}{6} = \sqrt[3]{( \frac{1}{6} {)}^{3} } = \sqrt[3]{ \frac{1}{216} } \\ \\ g) \: \frac{2}{3} = \sqrt[3]{( \frac{2}{3} {)}^{3} } = \sqrt[3]{ \frac{8}{27} } \\ \frac{3}{5} = \sqrt[3]{( \frac{3}{5} {)}^{3} } = \sqrt[3]{ \frac{27}{125} } \\ \\ h) \: 0.1 = \sqrt[3]{ {0.1}^{3} } = \sqrt[3]{0.001} \\ 0.2 = \sqrt[3]{(0.2 {)}^{3} } = \sqrt[3]{0.008} [/tex]
