Question

prove that 3+2√5 is irrational

Answer 1

Hello!!

3 + 2√5 = a/ b

2√5 =a/b -3

√5 =a-3b/2b

√5 is rational.

This contradicta the fact that √5 is irrational.

So our supposition is incorrect.

Hope this will help you.

Answer 2

1st assume

at last our assumption is wrong this is irrational number