Question Detail
Question
Find the term independent of x in the expansion of (x + 1/x)^10.
Correct Answer
Option A is the correct answer.
Detailed Explanation
General term: T_r+1 = C(10,r) x^{10-r} * (1/x)^r = x^{10-2r}. Set exponent = 0 → 10-2r=0 → r=5 → T_6 = C(10,5) ✔.
Hint
Solve 10-2r=0 for r.