Resposta:
a. [tex]\frac{7}{1000}[/tex]
b. [tex]\frac{2}{3}[/tex]
c. 4
d. -8
Explicação passo a passo:
[tex]a. \sqrt{0,0049}= \sqrt{\frac{49}{10000} }= \frac{\sqrt{49}}{\sqrt{10000}} = \frac{7}{1000} \\b. \sqrt{\frac{196}{441}}= \frac{\sqrt{196}}{\sqrt{441}}= \frac{14}{21} = \frac{2}{3}\\c. \sqrt[5]{1024} = \sqrt[5]{4^5} = 4^\frac{5}{5} = 4\\d. \sqrt[3]{-512} = \sqrt[3]{-8^3}= -8^\frac{3}{3} = -8[/tex]
