Question

Prove that 7root 5 is irrational.​

Answer 1

Answer:

Let 7√5 be a rational number.

So,

7√5 = p/q.

(p and q are co-prime number and q ≠ 0)

=> √5 = p/7q

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

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

Hope this helps

Answer 2

Answer:

Step-by-step explanation:

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