Question

If x=3root6 then find x^2+1/x^2

Answer 1

x= 3√6

so = (3√6)^2 + 1 / (3√6)^2

= 54 + 1 / 54

= 2916 / 54 + 1 / 54

= 2917 / 54

or 54.0185 .

Answer 2

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