Question

Como fazer?

(1/3)²

 (-2/5)³

(1/3)-4

Answer 1

(1/3)² = 1/9

 

(-2/5)³ = -2/5 x -2/5 x -2/5 = -8/125

 

(1/3)⁻⁴ = 3⁴ = 3x3x3x3 = 81

Answer 2

$\left ( \frac{1}{3} \right )^2 = \left ( \frac{1^2}{3^2} \right ) = \boxed{\frac{1}{9}}$

 

 

$\left ( \frac{- 2}{5} \right )^3 = \left [ \frac{(- 2)^3}{5^3} \right ] = \boxed{\frac{- 8}{125}}$

 

 Por fim,

 

$\left ( \frac{1}{3} \right )^{- 4} = \left ( \frac{3}{1} \right )^4 = \frac{81}{1} = \boxed{81}$