Помогите!!!!!)

Question

Помогите!!!!!)

Answer 1

Y(5y+1)=(y+1)(y+2)
5y²+y=y²+2y+y+2
4y²-2y-2=0
2y²-y-1=0
D=1+2*4=9=3²
y(1)=(1+3)/2*2=4/4=1
y(2)=(1-3)/4=-2/4=-1/2