Question

Resolver a equação: log_9(x+1) = log_3 (2x)

Answer 1

Ola Betania

log9(x + 1) =  log3(2x)

log(x + 1)/2log(3) = log(2x)/log(3)

log(x + 1) = log(4x²)

x + 1 = 4x²

4x² - x - 1 = 0

delta
d² = 1 + 16 = 17
d = √17

x = (1 + √17)/8 

.