Question

a)8-².8^6=
b)15³.15².15.15^4=
c)3^5:3²=
d)10^5:10^5+
e)9-²:9-^5=
f)(5/9)-¹=
g)(3/8)-¹

Answer 1

Dica: potências de mesma base conserva-se a base e soma-se os expoentes,veja:

•Respostas

a)8-².8^6 =
8-².8^6 =
8⁴

b)15³.15².15.15^4 =
15³.15².15¹.15⁴ =
15^10

c)3^5:3²=
3^5.3^-2 =
3³ =
27

d)10^5:10^5 =
10^5 : 10^5 =
10^5 . 10^-5 =
10^0 =
1

e)9-²:9-^5=
9^-2 : 9^-5 =
9^5 / 9^2 =
9^5 . 9^-2 =
9^3 =
729

f)(5/9)-¹=
(5/9)-¹ =
9/5

g)(3/8)-¹ =
(3/8)-¹ =
8/3