Q. 144.2( 11 Votes )

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Answer :

Given:


To prove: It is irrational number.


Explanation:


Suppose that is a rational number.


It means it will be of for where a and b are integers and b not equal to zero.


So,





But √5 Is an irrational number which contradicts the fact that is a rational number.


So, our assumption is wrong.


Hence,is an irrational number.


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