Question

5^ -3

(2/5)^ -3

(6/3)^ -1

7^ -2

Por favor alguém me ajuda preciso do cálculo

Answer 1

Bom dia.

$\\ 5^{-3} =1/5^3=1/125 \\ \\ (2/5)^{-3}=(5/2)^3=5^3/2^3=125/8 \\ \\ (6/3)^{-1}=3/6=1/2 \\ \\ 7^{-2}=1/7^2=1/49$