Question

show that root 5 is irrational​

Answer 1

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$\implies$Let us prove that √5 is an irrational number, by using the contradiction method.

So, say that √5 is a rational number can be expressed in the form of pq, where q ≠0.

So, let √5 equals pq. Where p, q are co-prime integers

i.e. they do not have any common factor except '1'.