Question

Calcule o valor da expressão numérica: (-2)³ - 3⁻³

Answer 1

(- 2)³ - 3⁻³ =
= (- 8) - (1/3)³ =
= - 8 - 1/27 =
= (- 1 - 216)/27 =
= - 217/27

Answer 2

$(-2)^3 - 3 ^{-3}= \\ \\ (-8)-( \frac{1}{3}) ^{+3}= \\ \\ (-8)-( \frac{1}{27}) = \\ \\ - \frac{27*8}{27}- \frac{1}{27} = \frac{-216-1}{27}= \boxed{- \frac{217}{27}}$