Question

plz answer this question ​

Answer 1

Put 2 - √5 in p/q form

:- 2-√5 = p/q

:- -√5 = p/2q

So here p and q are integers...

Therefore they are rational.

But we know that -√5 is an irrational

:- A rational# Irrational

So our assumption is failed that -√5 is a rational

:- 2-√5 is a rational number

Answer 2

Answer:

it is a very easy question so slove yourself.