Question

por favor respondam as 3, me ajudemmm​

Answer 1

Resposta:

3) Item c)

4) Item c)

5) Item c)

Explicação passo-a-passo:

3)

$\frac{\sqrt[3]{3}+\sqrt[3]{9}}{\sqrt[3]{3}}=\frac{\sqrt[3]{3}}{\sqrt[3]{3}}+\frac{\sqrt[3]{9}}{\sqrt[3]{3}}=1+\sqrt[3]{\frac{9}{3}}=1+\sqrt[3]{3}$

4)

$(\frac{1}{5})^{-2}+(\frac{1}{5})^{2}+\sqrt[3]{-27}=5^{2}+\frac{1}{25}+(-3)=25+\frac{1}{25}-3=22+\frac{1}{25}=\frac{550+1}{25}=\frac{551}{25}$

5)

$\frac{35\sqrt{72}}{5\sqrt{8}}=\frac{35}{5}.\frac{\sqrt{72}}{\sqrt{8}}=7.\sqrt{\frac{72}{8}}=7.\sqrt{9}=7.3=21$