Question 9

If x+$$\frac{1}{x}$$=2 then the value of $$x^{100}$$+$$\frac{1}{x^{100}}$$ is

Solution

Given,   $$x+\ \frac{\ 1}{x}=2$$

             $$x^2+1=2x^{ }$$

   $$x^2-2x+1=0$$

         $$\left(x-1\right)^2=0$$

                       $$x=1$$

Therefore, $$x^{100}+\ \frac{\ 1}{x^{100}}=1^{100}+\ \frac{\ 1}{1^{100}}$$

                                            =  1 + 1

                                            = 2        


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