2. Simplify each of the following expressions:

(i) \((3+\sqrt 3)(2+\sqrt 2)\)

(ii) \((3+\sqrt 3)(3-\sqrt 3)\)

(iii) \((\sqrt 5+\sqrt 2)^2\)     

(iv) \((\sqrt 5-\sqrt 2)(\sqrt 5+\sqrt 2)\)