Question

Resolva as seguintes equações exponenciais: (ANEXO)

Answer 1

(1/5)ˣ = 125

(1/5)ˣ = (1/5)⁻³

x = - 3


 

Answer 2

a)   (1/5)^x=5^3  ⇒(1/5)^x = (1/5)^-3 ⇒x=-3

b)  [3^(1/4)]^x = 9^(1/3) ⇒3^(x/4)=(3^2)^(1/3) ⇒3^(x/4) = 3^(2/3) ⇒

x/4 = 2/3 ⇒x= 8/3