Question

if x 3+√2,check wheather x+1/x is a rational number or irrational no.

Answer 1

It will rational
You can solve it like this
If x=3+√2
so x+1/x
=3+√2+1/3+√2
Rationalizing 1/3+√2
it will 3-√2/7
so, 3+√2+3-√2/7
It is 6/7
Hope it help.