Question

(5^6 . 5^-2 ) : 5^4 é igual a :

a- 0

b- 1

c-5^-3

d- 5^-8

Answer 1

$\dfrac{5^6 * 5^-^2}{5^4} \\ \\ \\ \dfrac{5^6 * (\dfrac{1}{5})^2}{5^4} \\ \\ \\ \dfrac{5^6 * \dfrac{1}{5^2}}{5^4} \\ \\ \\ \dfrac{ \dfrac{5^6}{5^2}}{5^4} \\ \\ \\ \dfrac{5^4}{5^4} => \ 1$


Resposta letra b) 1