Question

prove that 2√5 number is irrational.​

Answer 1

Because Rational number is p/q and q doesn't equal to 0 Co- prime number Interger

Answer 2

let us consider that

$2 \sqrt{5}$

is an rational number..

so..,

$2 \sqrt{5}$

=p/Q..

..

√5=P/2Q..

so it is a irrational