Question

Resolva a equação exponencial

Answer 1

9 ˣ = ∛ 1/81

9 ˣ = ∛( 1/3 )⁴

(3)²ˣ = 3 ⁻ ⁴/₃

2x = - 4/3

x = -4/3 . 1/2

x =  - 4/6  →   x = - 2/3