Question

C e D pra amanhã com conta pfv
abram a foto para ver melhor

Answer 1

$(\frac{1}{3}+\frac{1}{4})^{2}\times(\frac{5}{10})^{2}=(\frac{4}{12}+\frac{3}{12})^{2}\times(\frac{1}{2})^{2}= \\ (\frac{7}{12})^{2}\times\frac{1^{2}}{2^{2}}=\frac {7^{2}}{12^{2}}\times\frac{1}{4} = \\ \frac{49}{144}\times\frac{1}{4} = \frac{49}{576}$

$(\frac{2}{3})^{3}\times\sqrt{\frac{100}{16}} = \frac{2^{3}}{3^{3}}\times\frac{\sqrt{100}}{\sqrt{16}} = \\ \frac{8}{27}\times\frac{10}{4}=\frac{80}{108}=\frac{20}{27}$