Question

2.log4(x-1)+log4(x-1)=6

Answer 1

2log4(x-1) + log4(x-1) = 6 

factorizamos log4(x-1) 

log4(x-1) ( 2+1) = 6
log4(x-1) (3) = 6 

log4(x-1) =2

ahora resolvemos el logaritmo en base 10

10^2 = 4(x-1)
100 =4x -4
104=4x 
26 =x