Log x 5 log4 1 x. Log x 1 2x 5 log 2x-5 x+1 2. log x+1(2x-5)+log2x-5(x+1). log5(x2+2x)=log5(x2+10). log2(x-1)<1.

Log x 5 log4 1 x. Log x 1 2x 5 log 2x-5 x+1 2. log x+1(2x-5)+log2x-5(x+1). log5(x2+2x)=log5(x2+10). log2(x-1)<1.
30 / 61