If `x = (sqrt3 + 1)/(sqrt3 - 1 ) and y = (sqrt3 - 1)/(sqrt3+1) `, then the value of `(x^2 + y^2)` is :

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Q 1423780641.     If `x = (sqrt3 + 1)/(sqrt3 - 1 ) and y = (sqrt3 - 1)/(sqrt3+1) `, then the value of `(x^2 + y^2)` is :
A

10

B

13

C

14

D

15

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Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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