Question

prove that 2+√3is irrational ​

Answer 1

Step-by-step explanation:

let us assume 2+√3 as rational.

⇒2+√3=a/b

∴2-a/b=-√3 or √3=a/b-2

⇒√3=a/b-2

√3=a-2b/b

∵a and b are positive integers  

∴a-2b/b is rational

⇒√3 is rational

but we know that √3 is irrational  

∴⇒2+√3 is irrational