Question

if 3+√2=x,find x+1/x

Answer 1

$= \frac{ {(3 + \sqrt{2)} }^{2} + 1 } {3 + \sqrt{2} } \\ = \frac{9 + 2 + 1}{3 + \sqrt{2} } = \frac{12}{3 + \sqrt{2} }$