Question

How can I prove that 7root 5is an irrational number?? 0

Answer 1

Let 7√5 be a rational number.

7√5 = p/q(p and q are integers)

=> √5 = p/7q

As, we can see that p/7q ia rational number so √5 should also be rational. But this contradicts the fact that √5 is irrational.

So, we can say that 7√5 is irrational number.

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Answer 2

refer to the attachment please