5y+1/y+1=y+2/y
y(5y+1)=(y+2)(y+1)
5y^2+y=y^2+y+2y+2
5y^2+y-y^2-y-2y-2=0
4y^2-2y-2=0. |:2
2y^2-y-1=0
D=1+8=9
y1=1+3/4=1
y2=1-3/4=-0.5
Ответ:-0.5;1.
2) 2y+3/2y-1=y-5/y+3
(2y+3)(y+3)=(y-5)(2y-1)
2y^2+6y+3y+9=2y^2-y-10y+5
2y^2+6y+3y+9-2y^2+y+10y-5=0
20y+4=0
20y=-4
y=-0.2
Ответ:-0.2