1.

\begin{array}{l}{\text { If } \frac{x^{2}+1}{x}=3 \frac{1}{3} \text { and } x>1 ; \text { find }} \\ {\text { (i) } x-\frac{1}{x} \quad \text { (ii) } x^{3}-\frac{1}{x^{3}}}\end{array}

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