Question

prove √5 as irriational​

Answer 1

$\mathbb{\huge{\red{HEY\:MATE}}}$

prove that root 5 is an irrational number ?

therefore, they are not co-prime, which contradicts our assumption that √5 is rational.
⭐Suppose a and b have a common factor other than 1, then we can divide by the common factor, and assume that a and b are coprime. ... Therefore, a and b have at least 5 as a common factor.

ANOTHER WAY

by 5 so B is also divisible by 5 so this is result number 2 in this result number. ... so we can say that root three is not a rational number. so if it is not a rational number then it is s irrational number. so this way we can find or prove that root 5 is irrational.

Answer 2

hope this helps you...