x = 7 + 5√6 find x^2 + 1/x^2 + 2 ?
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X=7+5√6
To find x²+1/x²+2,put x 7+5√6
(7+5√6)²+1/(7+5√6)²+2
=(49+30)+1/(49+30)+2
=79+1/79+2
=81+1/79
=6399/79+1/79
=6400/79
=81.01
Hope this helps you.
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