Question

prove √5 a irrational no.
ans on copy plss
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Answer 1

Answer:



Let 5 be a rational number.

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.