Question

prove that 3 under root 5 is not a rational number​

Answer 1

To prove 3√5 is an irrational no.

let, 3√5 a rational no.

so, we can write

3√5 = a/b

√5 = a/3b

a/3b is a rational no.

but , we have proved before √5 is an irrational no.

so, this quantradic fact is that √5 is a irrational .

so , 3√5 is an international no.

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