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Given that x satisfies x^2 - 8x + 1 = 0 , find the value of x + 1/x.

 Jan 27, 2022
 #1
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Using the Quadratic Formula   \(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)

 

 

you'll find there are TWO values of 'x'  that satisfy this quadrtatic     x  =  4 +- sqrt(15)   

     sub each of these x values in the   x + 1/x    equation              <=====     Take it from here !

 Jan 27, 2022

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