Question

Prove that √5 is irrational.​

Answer 1

First you have to make rational then you have to prove it irrational

Answer 2

Answer:

hence root 5 can be written in the form of a/b

hence root 5 = a/b

root 5b = a

(root 5b²)=a²

5b² =a²

a²/5=b²

so a = 5c

5b²= a²

5b² =( 5c²)

5b² = 25c²

b²=1/5 ×25c²

b² = 5c²

b²/5=c²

so a and b have factor 5

hence consumption is wrong

root 5is irrational