Evaluate :

`(sqrt5 - 1/sqrt5 ) ( sqrt5 - 1/sqrt5 )`

(sqrt2 + 1)/sqrt5

Evaluate : ( sqrt5 - sqrt2 ) times ( sqrt5 + sqrt2 )

Evaluate : sqrt(5) + sqrt(5) + sqrt(5) + sqrt (5)

Evaluate : sqrt( 5 + sqrt( 5 + sqrt ( 5 + sqrt( 5 ----- oo )))

Evaluate : sqrt( 5 + sqrt( 5 + sqrt ( 5 + sqrt( 5 ----- oo )))

(2 + sqrt5)/(2 - sqrt5)

Evaluate : (1+sqrt7)^5+(1-sqrt7)^5

The value of { 1/(sqrt6 - sqrt5) - 1/(sqrt5 - sqrt4) + 1/(sqrt4 - sqrt3) - 1/(sqrt3 - sqrt2) + 1/(sqrt2 - 1)} is :

(sqrt(5)-1)/(sqrt(5)+1)+(sqrt(5)+1)/(sqrt(5)-1)

(sqrt5-3)/(sqrt5+3)times(sqrt5-3)/(sqrt5-3)=?