If x + 1/x = 2 then find x2 + 1/x2
Choose the correct choice from the following answers:
A) 1 B) 2 C) 3 D) 4 E) 5

Rationale: if x + 1 / x = p = = > x ^ 2 + 1 / x ^ 2 = p ^ 2 - 2 ans = 2 ^ 2 - 2 = 2 answer : b
Answer: B