[tex]B)\\\\0,3*\sqrt{20}=\sqrt{1\frac{4}{5}}\\\\L=0,3*\sqrt{20}=\frac{3}{10}*\sqrt{4*5}=\frac{3}{10}* \sqrt{4}*\sqrt{5}=\frac{3}{\not{10}^5}*\not{2}^1\sqrt{5}=\frac{3\sqrt{5}}{5}\\\\P=\sqrt{1\frac{4}{5}}=\sqrt{\frac{9}{5}}=\frac{\sqrt{9}}{\sqrt{5}} =\frac{3}{\sqrt{5}}*\frac{\sqrt{5}}{\sqrt{5}} =\frac{3\sqrt{5}}{5}\\\\L=P[/tex]
[tex]C)\\\\0,4*\sqrt[3]{100}=\sqrt{\frac{4}{5}}\\\\L=0,4*\sqrt[3]{100}=\frac{4}{10}*\sqrt[3]{100}=\frac{2\sqrt[3]{100}}{5}\\\\P= \sqrt{\frac{4}{5}}=\frac{\sqrt{4}}{\sqrt{5}}=\frac{2}{\sqrt{5}}*\frac{\sqrt{5}}{\sqrt{5}}= \frac{2\sqrt{5}}{5}\\\\L\neq P[/tex]
