Question

(1\2 - 1) *expoente -1* + (-2)³

Answer 1

$\frac{1}{2} ^{-1} + (-2)^ {3} = \frac{2}{1} ^{1} + (-8) = \frac{2}{1} - \frac{8}{1} = -6$

Answer 2

Vou calcular do jeito que eu entendi. Se eu estiver errado me corrija que eu edito:

$\left( \frac{1}{3}-1\right)^{-1}+(-2)^3\\\\ \left( \frac{1-3}{3}\right)^{-1}+(-8)\\\\ \left( \frac{-2}{3}\right)^{-1}-8\\\\ \left(\frac{3}{-2}\right)^1-8\\\\ \frac{-3}{2}-8\\\\ \frac{-3-(8\cdot2)}{2}\\\\ \frac{-3-16}{2}\\\\ \boxed{\boxed{- \frac{19}{2}}}$