7sqrt(5)

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

determine a and b if (7+sqrt(5))/(7-sqrt(5))-(7-sqrt(5))/(7+sqrt(5))=a+7b 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}

Find the values of a and b in each of the following (7+sqrt5)/(7-sqrt5)-(7-sqrt5)/(7+sqrt5)=a+(7sqrt5b)/11

(sqrt7+sqrt5)(sqrt7-sqrt5)=...............

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

(sqrt7-sqrt5)/(sqrt7+sqrt5)

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