Question

Sendo log de (2x + 10) na base 4 igual a 2, resolva:
a. 1
b. 2
c. 4
d. 3

Alguem pode me ajudar ?

Answer 1

$log_4(2x+10) = 2\\\\2x+10=4^2\\\\2x+10=16\\\\2x=16-10\\\\2x=6\\\\x=3$

Alternativa "d"

Answer 2

Boa tarde Flp 

log4(2x + 10) = 2
log4(2x + 10) = log4(16) 

2x + 10 = 16
2x = 6

x = 3  (D)