Simplify: `(sqrt(5)-2)/(sqrt(5)+2)-(sqrt(5)+\ 2)/(sqrt(5)-\ 2)`

Simplify (5+sqrt(2))(3+sqrt(5))

Simplify (sqrt5-2)/( sqrt5+2) - (sqrt 5+2)/( sqrt5-2)

Simplify (5+sqrt(7))(5+sqrt(2))

Simplify (sqrt(3)+sqrt(2))/(sqrt(5)-sqrt(2))

Simplify each of the following : (i) 3/(5-sqrt(3))+2/(5+sqrt(3)) (ii) (4+sqrt(5))/(4-sqrt(5))+(4-sqrt(5))/(4+sqrt(5)) (iii) (sqrt(5)-2)/(sqrt(5)+2)-(sqrt(5)+2)/(sqrt(5)-2)

Simplify (sqrt5-sqrt2)(sqrt5+sqrt2)

simplify (5+sqrt(7))(5+sqrt(2))

Simplify (sqrt(5)+sqrt(2))(sqrt(3)+sqrt(2))

Simplify: (2sqrt(3)+sqrt(5))(2sqrt(3)-sqrt(5))

Simplify: (5+sqrt(5))(5-sqrt(5))( ii) (3+2sqrt(2))(3-2sqrt(2))