Question (21/85)

if `X = (sqrt(3) + 1)/(sqrt(3) - 1)`  and `Y =(sqrt(3) - 1)/(sqrt(3) + 1)`  , then what is value of `(X^2 + Y^2)`  ?

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(A)  10

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(B)  12

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(C)  14

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(D)  16

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Question (22/85)

If `x = (7 - 4 sqrt(3))`  , then the value of `(x + 1/x)`  is ?

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(A)  3

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(B)  8

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(C)  14

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(D)  14.414

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