a+b = -3 => a=-b-3
a*b=1 => (-b-3)*b=1=> -b^2-3b=1=>
b^2+3b+1=0
delta=b^2-4ac => delta =9-4=5 => x1=(-b+rad(delta))/2a=> x1=(-3+rad(5))/2
x2=(-b-rad(delta))/2a =>
x2= (-3-rad(5))/2
1.b=(-3+rad(5))/2 => a= (3-rad(5))/2 -3 => a=(-3-rad(5))/2
2. b=(-3-rad(5))/2 => a= (3+rad(5))/2 -3=> a=(-3+rad(5))/2