Question

Rationalise the denominator.
(i)1/√5 (ii) 2/√6 (iii) √21/√3

Answer 1

Answer:

I) 1/√5=√5/√5×√5=√5/5

ii) 2/√6=2√6/√6×√6=2√6/6=√6/3

iii)√21/√3=√7×√3/√3=√7