SOLUTION: if x^2 + 1/x^2 =4 , then find the value of x^3 + 1/x^3

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Question 577760: if x^2 + 1/x^2 =4 , then find the value of x^3 + 1/x^3
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Note that





Consider the equation





We know that if x + 1/x is sqrt(6), then we will have



If x + 1/x = -sqrt(6) then we have



Either of these can be correct.