Question

Pls give me the ans
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Answer 1

Answer:

We need to find,

We are given,

We know that,

Lets take the cube of both sides of the given equation,

=> (x + 1/x)^3 = 3^3

=> x^3 + 1/x^3 + {3 . x . 1/x (x + 1/x)} = 27

=> x^3 + 1/x^3 + 3(x + 1/x) = 27

Since x + 1/x = 3

=> x^3 + 1/x^3 + 3×3 = 27

=> x^3 + 1/x^3 = 27-9

Step-by-step explanation:

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