Evaluate :
`( sqrt(7) + sqrt(5) ) ( sqrt(5) - sqrt(7) )`

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

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

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

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

What is the value of (1/(sqrt(9) - sqrt(8)) - 1/(sqrt(8) - sqrt(7)) + 1/(sqrt(7) - sqrt(6)) - 1/(sqrt(6) - sqrt(5)) + 1/(sqrt(5) - sqrt(4))) ?

Evaluate (sqrt(7)-sqrt(2))(sqrt(5)+sqrt(2))

If sqrt(35)=5.9160, then the value of (sqrt(7)+sqrt(5))/(sqrt(7)-sqrt(5))

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

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

The greatest among sqrt(7) - sqrt(5) , sqrt(5) - sqrt(3) , sqrt(9) - sqrt(7) , sqrt(11) - sqrt(9) is