1.

Express the following surds with rational denominators `(a) 2/sqrt14 (b) (2.3^(1/3))/25^(1/3)`

Answer» (a) `(2)/(sqrt(14))xx(sqrt(14))/(sqrt(14))=(2sqrt(14))/(14)=(sqrt(14))/(7)`
(b) `(2root(3)(3))/(root(3)(25))=(2root(3)(3))/(root(3)(25))xx(root(3)(5))/(root(3)(5))=(2root(3)(3xx5))/(root(3)(5^(3)))=(2root(3)(15))/(5)`


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