Question

Determine o valor de:
(-2)-³
(-2/3)-²
(-1/5)-¹​

Answer 1

Resposta:

$(-2)^{3} = (-2).(-2).(-2) = -8$

$(-\frac{2}{3})^{-2} = (-\frac{3}{2}).(-\frac{3}{2}) = \frac{9}{4}$  

$(-\frac{1}{5})^{-1} = (-\frac{5}{1})^{1} = -5$