SOLUTION: if (x+(1/x))=4 then find value of (x^3+(1/x^3))

SOLUTION: if (x+(1/x))=4 then find value of (x^3+(1/x^3))

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Question 763381: if (x+(1/x))=4 then find value of (x^3+(1/x^3))
Answer by ramkikk66(644) (Show Source): You can put this solution on YOUR website!
This is very similar to question 763384, which has been solved.
We will use the identity
------- (1)

But by the identity (1),
------- (2)
Substituting for (x + 1/x) as 4
------- (3) ---> x*1/x = 1
------ (4)
So,

:)
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