Log 1/3 (3x + 4) = log 1/3 (x2 - 4x - 14)
ОДЗ: х>-4/3, 3х+4=х²-4х-14 -х²+7х+18=0 х²-7х-18=0 D=121 x=(7-11)/2=-2 x=(7+11)/2=9