Question

решите уравнение log4 (x+1)+log4 (x+1)в квадрате =3

Answer 1

log4 (x+1) + 2log4 (x+1) = 3 

3 log4 (x+1) =3

log4 (x+1) = 1

log4 (x+1) = log4 4

x+1 = 4

x=4-1=3