Como fazer?
(1/3)²
(-2/5)³
(1/3)-4
(1/3)² = 1/9
(-2/5)³ = -2/5 x -2/5 x -2/5 = -8/125
(1/3)⁻⁴ = 3⁴ = 3x3x3x3 = 81
[tex]\left ( \frac{1}{3} \right )^2 = \left ( \frac{1^2}{3^2} \right ) = \boxed{\frac{1}{9}}[/tex]
[tex]\left ( \frac{- 2}{5} \right )^3 = \left [ \frac{(- 2)^3}{5^3} \right ] = \boxed{\frac{- 8}{125}}[/tex]
Por fim,
[tex]\left ( \frac{1}{3} \right )^{- 4} = \left ( \frac{3}{1} \right )^4 = \frac{81}{1} = \boxed{81}[/tex]
