Question

ajudaammm
20 pontos pra quem me ajudar ​

Answer 1

Resposta:

a) $\sqrt{\dfrac{49}{9}} = \dfrac{\sqrt{49}}{\sqrt{9}} = \dfrac{7}{3}$

b) $(\dfrac{4}{5})^2 = \dfrac{4^2}{5^2} = \dfrac{16}{25}$