3х^2=18х
3х^2-18х=0
3x(x-6)=0
x= 0 x=6
х2/(х2-9)=(12-х)/(х2-9)
х2/(х2-9)=12/(х2-9)-х/(х2-9)
х2/(х2-9)+х/(х2-9)-12/(х2-9)=0
(x+4)/(x-3)=0
1/(x-3)=0
x=-4
6/(x-2)+5/x = 3
6/(x-2)+5/x-3=0
-(3x^2-17x+10)/(x(x-2))=0 решаем 3x^2-17x+10=0
d=169
x=5
x=2/3
3х^2=18х
3х^2-18х=0
3x(x-6)=0
x= 0 x=6
х2/(х2-9)=(12-х)/(х2-9)
х2/(х2-9)=12/(х2-9)-х/(х2-9)
х2/(х2-9)+х/(х2-9)-12/(х2-9)=0
(x+4)/(x-3)=0
1/(x-3)=0
x=-4
6/(x-2)+5/x = 3
6/(x-2)+5/x-3=0
-(3x^2-17x+10)/(x(x-2))=0 решаем 3x^2-17x+10=0
d=169
x=5
x=2/3