[tex]15.\\\sqrt[3]{1000}= \sqrt[3]{10*10*10} = 10\\ \sqrt[3]{8000000} = 200\\\sqrt[3]{0,125} = \sqrt[3]{\frac18} =\frac12=0,5\\ \sqrt[3]{0,000064} = \sqrt[3]{\frac{64}{1000000}} =\frac{4}{100}=0,04\\\sqrt[3]{64} =4\\\sqrt[3]{-27000} = -30\\\sqrt[3]{-0,027} = \sqrt[3]{-\frac{27}{1000}} =-\frac{3}{10}=-0,3\\\sqrt[3]{0,000008} = \sqrt[3]{\frac{8}{1000000}} = \frac{2}{100}=0,02\\[/tex]
[tex]17.\\4\sqrt4=4*2=8\\0,1\sqrt{100}=0,1*10=1\\-2*\sqrt[3]{8} =-2*2=-4\\100*\sqrt[3]{0,001} =100*0,1=10\\3\sqrt{25}=3*5=15\\20\sqrt{0,04}=20*\sqrt{\frac{4}{100}}=20*\frac{2}{10}=4\\3\sqrt[3]{-27} =3*(-3)=-9\\-5\sqrt[3]{-0,125} =-5\sqrt[3]{-\frac{1}{8}} =-5*(-\frac12)=2,5[/tex]