Question

how to prove √ 5 is irrational? ​

Answer 1

Answer:

then it must be in form of qp where, q=0 ( p and q are co-prime)

p2 is divisible by 5.

So, p is divisible by 5.

So, q is divisible by 5.

Thus p and q have a common factor of 5.

We have assumed p and q are co-prime but here they a common factor of 5.

Answer 2

Answer:

Then it must be in form of qp where, q=0 ( p and q are co-prime)

p2 is divisible by 5.

So, p is divisible by 5.

So, q is divisible by 5.

Thus p and q have a common factor of 5.

We have assumed p and q are co-prime but here they a common factor of 5.

Hope you got your answer

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