Question

Option (d) none of these
Irrelevant answers will be reported

Answer 1

Answer:

x + 1/x = 5

Explanation:

x^3 + 1/x^3 = 110

(x + 1/x)^3 - 3(x + 1/x) = 110

Let x + 1/x = k

k^3 - 3k - 110 = 0

k (k^2 - 3) = 5 (5^2 - 3)

Therefore k = 5

So, x + 1/x = 5