Question

Prove that 2 root 3 by 5 is irrational

Answer 1

Let it be rational number
therefore it can be written in form of a and b where a and b are co-prime numbers.
2√3=5a/b
5a/b is rational number as it is of the form p/q which is a rational number.
but we know that √3 is irrational number so our assumption is wrong.
2√3/5 is irrational.