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If xx=sqrt(3)+sqrt(2), then find xx+1/x,...

If `xx=sqrt(3)+sqrt(2),` then find `xx+1/x,x^(2)+(1)/(x^(2)),x^(3)+(1)/(x^(3)),x^(4)+(1)/(x^(4))`

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The correct Answer is:
`2sqrt3,10,18sqrt3,98`
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