Q. 123.7( 23 Votes )

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Answer :

Given: (5 + 3)


To prove: It is irrational.


Explanation:


Assume that 5 + 32 is rational
,


where a and b are integers.


we know that a, b, 3 and 5 are integers and they are also rational {i.e RHS is rational}
therefore2 will be rational.
but we know that2 is irrational.
there is a contradiction
so, 5 + 32 is an irrational number.


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