" (ii) "(2sqrt(30))/(sqrt(6))-(3sqrt(140))/(sqrt(28))+(sqrt(55))/(sqrt(99))

Simplify (i) 3 sqrt ( 45) - sqrt (125) + sqrt (200) - sqrt(50) (ii) ( 2 sqrt ( 30 ))/( sqrt ( 6)) - ( 3 sqrt(140))/(sqrt ( 28)) + (sqrt(55))/(sqrt(99)) (iii) sqrt (72) + sqrt(800) - sqrt ( 18 )

(sqrt(2))/(sqrt(6)-sqrt(2))-(sqrt(3))/(sqrt(6)+sqrt(2))

Simplify (i) (4+ sqrt(5))/(4-sqrt(5))+(4-sqrt(5))/(4+sqrt(5)) (ii) (1)/(sqrt(3) + sqrt(2)) - (2)/(sqrt(5)-sqrt(3)) -(2)/(sqrt(2) - sqrt(5)) (iii) (2+sqrt(3))/(2-sqrt(3)) + (2-sqrt(3))/(2+sqrt(3)) + (sqrt(3)-1)/(sqrt(3)+1) (iv) (2+sqrt(6))/(sqrt(2)+sqrt(3))+(6sqrt(2))/(sqrt(6)+sqrt(3)) -(8sqrt(3))/(sqrt(6)+sqrt(2))

(1)/(sqrt(12)-sqrt(140))+(1)/(sqrt(8-sqrt(60)))=

(3+sqrt(6))/(sqrt(3)+sqrt(2))

(3sqrt(2))/(sqrt(3)+sqrt(6))-(4sqrt(3))/(sqrt(6)+sqrt(2))+(sqrt(6))/(sqrt(3)+sqrt(2))

(6implify:)/(2sqrt(3)-sqrt(6))+(sqrt(6))/(sqrt(3)+sqrt(2))-(4sqrt(3))/(sqrt(6)-sqrt(2))