Question

Resolva as equaçoes exponecias
a) 15=3 elevado a x =1/27


b) 16=2 elevado a x-1=16

Answer 1

3^x = 1/27

3^x = 3^-3

x= -3

2^(x-1) = 16

2^(x-1)= 2⁴

(x-1) = 4

x = 5