Question

Por favor me ajudem! (-3/7)-³ x (-1/5)-5=?

Answer 1

Resposta:

$\text{\sf Leia abaixo}$

Explicação passo-a-passo:

$\sf (-\dfrac{3}{7})^{-3} \times (-\dfrac{1}{5})^{-5}$

$\sf (-\dfrac{7}{3})^{3} \times (-\dfrac{5}{1})^{5}$

$\sf (-\dfrac{343}{27}) \times (-\dfrac{3125}{1})$

$\boxed{\boxed{\sf \dfrac{1.071.875}{27}}}$

Answer 2

Explicação passo-a-passo:

$\sf \left(-\dfrac{3}{7}\right)^{-3}\times\left(-\dfrac{1}{5}\right)^{-5}$

$\sf =\left[\left(-\dfrac{3}{7}\right)^{3}\right]^{-1}\times\left[\left(-\dfrac{1}{5}\right)^{5}\right]^{-1}$

$\sf =\left[\left(-\dfrac{3}{7}\right)^3\times\left(-\dfrac{1}{5}\right)^5\right]^{-1}$

$\sf =\left[\left(-\dfrac{27}{343}\right)\times\left(-\dfrac{1}{3125}\right)\right]^{-1}$

$\sf =\left[\dfrac{27}{1071875}\right]^{-1}$

$\sf =\red{\dfrac{1071875}{27}}$