Question

if X - 1/x = 2 + 3^1/2 then find x^3 - 1/x^3​

Answer 1

Step-by-step explanation:

We know !

(x + 1/x)²  = x² + 1/x² + 2 

(x + 1/x)² = 27 + 2 

(x + 1/x)² = 29 

taking square roots on both sides 

x + 1/x = √29 

2.8

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