Question

alguem sabe mim responder?

Answer 1

a)8ⁿ = 128
8ⁿ = 8².2
(2³)ⁿ = (2³)².2
2³ⁿ = 2^7
3n = 7
n = 7/3
S = {7/3}

b)3ⁿ = 1/81
3ⁿ = 81-¹
3ⁿ = (3⁴)-¹
3ⁿ = 3-⁴
n = -4
S = {-4}