1.

Prove that 5/√7 is irrational​

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Answer:

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Step-by-step explanation:

ANSWER

Let us assume that 5√7 is rational number

Hence 5√7 can be written in the form of  a/B  where a,b(b  ≠0) are co-prime

⟹5√7=a/b

⇒√7=a/5b

 

But here √7   is irrational but a/5b is rational

as Rational  ≠Irrational

This is a contradiction  

so 5√7 is a irrational number

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