**If x + 1/x = 2, then x**^{2} + 1/x^{2} is equal to

^{2}+ 1/x

^{2}is equal to

(a) 4

(b) 2

(c) 0

(d) None of these

**Answer : (b) 2**

Hint:

x + 1/x = 2

Or, (x + 1/x)^{2} = 2^{2}

Or, x^{2} + 1/x^{2} + 2 = 4

Or, x^{2} + 1/x^{2} = 2

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