(sqrt(7)-sqrt(5))/(sqrt(7)+sqrt(5))+sqrt(35)

Evaluate (sqrt(7)-sqrt(5))/ (sqrt(7)-sqrt(5))

show that (sqrt(7)-sqrt(5))/(sqrt(7)+sqrt(5))times(sqrt(7)-sqrt(5))/(sqrt(7)-sqrt(5)) =frac{(sqrt(7)-sqrt(5))^(2)}{2}

Evaluate : (sqrt(7)+sqrt(5))/(sqrt(7)+sqrt(20)+sqrt(28)-sqrt(5)-sqrt(80))

(sqrt(3)-sqrt(5))(sqrt(3)+sqrt(5))/(sqrt(7)-2sqrt(5))

(sqrt(7)+sqrt(5))/(sqrt(7)-sqrt(5) Is equal to

(sqrt(7)-sqrt(5))^3 - (sqrt(7)+sqrt(5))^3