Question

If x=2+ √3 find x^2 + 1 / x^2​

Answer 1

Answer:

$= \frac{ {x }^{2} + 1}{ {x}^{2} } \\ \\ = \frac{( {2 + \sqrt{3} })^{2} + 1}{( {2 + \sqrt{3} )}^{2} } \\ \\ = \frac{4 + 3 + 1}{4 + 3} \\ \\ = \frac{8}{7}$