Question

resolva as equações exponenciais (em R)

a) 8* = 512

b) (1)*
--- =243
(9)

obs: *= x

Answer 1

8× = 512
(2³)× = 2^9
2³× = 2^9
3x = 9
x = 3


(1/9)× = 243
(9-¹)× = 3^5
((3²)-¹)× = 3^5
(3-²)× = 3^5
3-²× = 3^5
- 2x = 5
x = - 2/5