Log2log3x=1
Log3x=2
X=9
Lg(x-1)^2=0
(X-1)^2=1
X-1=1. X-1=-1
X=2. X=0
Lgx=2-lg5
Lgx+lg5=2
Lg5x=2
5x=100
X=20
Log1/5(2+x)/10=log1/5 2/(x+1)
D(y): x>-2,x>-1 (x>-1)
(2+x)/10=2/(x+1)
(2+x)(x+1)=20
X^2+3x+2-20=0
X^2+3x-18=0
D=81
X1=3, x2=-6(x>-1)
Ответ:x=3