Examine, whether the following numbers are rational or irrational :
(i) `(10)/(2sqrt(5))`
(i) `(sqrt(2)+2)^(2)`

Answer

(i) `6`, which is a rational number .
(ii) `6` which is a rational number .
(iii) `sqrt(5)` which is an irrational number .
(iv) `6+4sqrt(2)` which is an irrational number .