Question

(x³+1/x³) =52 then find the value of (x+1/x)​

Answer 1

Answer:

Sorry I don't know this answer

Answer 2

Step-by-step explanation:

(x + 1/x)3 = (x3 + 1/x3) + 3(x + 1/x).

.'. (x + 1/x)3 - 3 (x + 1/x) = (x3 + 1/x3) = 52

So (x + 1/x)3 - 3 (x + 1/x) = 52

Now, trick here is to , instead of resolving above equations and getting value of (x + 1/x) , its better to apply value from options itself, since it would be faster to get required answer.

So here first option clearly fits into equation 43 - 3 * 4 = 64 - 12 = 52