11log13(x^2 -4x-5)<= 12+ log13((x+1)^11/x-5)
ОДЗ: (x^2 -4x-5)>0 (-беск;-1)U(5;беск)
11log13(x^2 -4x-5)=11log13((x+1)(x-5))=11log13(x+1)+11log13(x-5)
log13((x+1)^11/x-5)=11log13(x+1)-log13(x-5)
11log13(x+1)+11log13(x-5)<= 12+11log13(x+1)-log13(x-5)
12log13(x-5)<= 12
log13(x-5)<= 1 х>5
log13(x-5)<= log13(13)
(13-1)(13-x+5)>=0
18-x>=0
х (5;18]
