Q. 25.0( 1 Vote )

Rationalise the d

Answer :

i.


Multiplying numerator and denominator of by 5-3√7; We get,



= {using (a-b)(a + b) = a2-b2}


=


=


Rationalised form of is


ii.


Multiplying numerator and denominator of by ; We get,



Applying : (a-b)(a + b) = a2-b2


=


=


=


Rationalised form of is


iii.


Multiplying numerator and denominator of by ; We get,



using (a-b)(a + b) = a2-b2


=


=


=


Rationalised form of is


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