x+(1/x) = 3.5 find x^2 + (1/x^2)	Select.
A) 2.25	B) 3.25	C) 10.25	D) 5.25	E) 6.25

Rationale: squaring on both sides ( x + 1 / x ) ^ 2 = 3.5 ^ 2 x ^ 2 + 1 / x ^ 2 = 12.25 - 2 x ^ 2 + 1 / x ^ 2 = 10.25 answer : c
Answer: C