Q. 13.7( 20 Votes )
Rationalise the denominator of each of the following (i-vii) :
(i)
(ii)
(iii)
(iv)
(v) 
(vi)
(vii) 
Answer :
(i) As there is √5 in the denominator and we know that √5 x √5 = 5
So, multiply numerator and denominator by √5,
(ii) 
(iii)
(iv) 
(v) 
(vi) 
(vii) 
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