If $$x = \frac{{\sqrt 3+ 1}}{{\sqrt 3- 1}}$$and $$y = \frac{{\sqrt 3- 1}}{{\sqrt 3+ 1}},$$then the value of $$\left( {{x^2} + {y^2}} \right)$$is?

If $$x = \frac{{\sqrt 3+ 1}}{{\sqrt 3- 1}}$$and $$y = \frac{{\sqrt 3-

1.	If $$x = \frac{{\sqrt 3+ 1}}{{\sqrt 3- 1}}$$and $$y = \frac{{\sqrt 3- 1}}{{\sqrt 3+ 1}},$$then the value of $$\left( {{x^2} + {y^2}} \right)$$is?
A.	0
B.	3
C.	4
D.	5
Answer» D. 5