If \( x+\frac{1}{x}=\sqrt{5} \) then find (i) \( x^{2}+\frac{1}{x^{2}} \) (ii) \( x^{3}+\frac{1}...

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If \( x+\frac{1}{x}=\sqrt{5} \) then find
(i) \( x^{2}+\frac{1}{x^{2}} \)
(ii) \( x^{3}+\frac{1}{x^{3}} \)
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