Question

prove that 3 + V5 is irrational number​

Answer 1

Step-by-step explanation:

Let 3+√5= p/q, where p and q are co primes.

3+√5= p/q

√5= p/q-3

= p-3q/q, which a rational no. As p/q is a rational no.

But an irrational no. Can't be a rational no.

So our assumption is wrong.

Hence 3+√5 is irrational.