For the following questions answer them individually
choose the figure that best represents the relation ship among the classes given below
State, Continent, District, Country
If x=$$\frac{\sqrt{3}+1}{\sqrt{3}-1}$$ y=$$\frac{\sqrt{3}-1}{\sqrt{3}+1}$$ then find the value of $$x^{2}+y^{2}$$
