Question

If x+1/x = 3, find the value of x^2+1/x

Answer 1

Answer: 7

Step-by-step explanation:

x+1/x = 3

(x+1/x)² = 3²

x+1/x = x²+1/x² + 2

So, x²+1/x²= (x+1/x)² - 2

                = (3)²-2

                = 9-2    

                 =7

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