Question

Prove that the above no. is an irrational no.

Answer 1

Let us assume that 2root3/5 is rational

P/q=2root3/5

2root3q=5p

Root3q=5p/2

Since 5p/2=rational and root3q=irrational

Our assumption is wrong

Therefore it is contradiction

Therefore 2root3/5 is irrational ......

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