Rationalise the denominators of the following:
i. 
ii. 
iii. 
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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