Question

if a and b is not coprime so why root 2 is not rational​

Answer 1

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Recall the properties of rational numbers.

According to Rational numbers properties.

A number is said to be rational if it can be expressed in the form of p/q where p and q are integers , q ≠0 , p and q are Co primes.

so here there is a condition stating that p and q must be Co primes.

Then only a particular number will become a rational number..

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Hope this is useful....

( An interesting question ).…