Simplify: `(3+sqrt7)(2+sqrt5)`

Simplify: (5+sqrt5)(5-sqrt5)

Simplify: (3sqrt(2)-2sqrt(2))/(3sqrt(2)+2sqrt(3))+(sqrt(12))/(sqrt(3)-sqrt(2)) (ii) (sqrt(5)+sqrt(3))/(sqrt(5)-sqrt(3))+(sqrt(5)-sqrt(3))/(sqrt(5)+sqrt(3))

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

Simplify ((sqrt3+sqrt5)(sqrt5+sqrt2))/(sqrt2+sqrt3+sqrt5)

Simplify: (7sqrt(3))/(sqrt(10)+sqrt(3))-(2sqrt(5))/(sqrt(6)+sqrt(5))-(3sqrt(2))/(sqrt(15)+3sqrt(2))

Simplify (sqrt(7))/(sqrt(2))+(3)/(sqrt(3))

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

Simplify (sqrt3-sqrt5)(sqrt5+sqrt3)

Simplify (sqrt5 - sqrt3)(sqrt5 + sqrt 3)