" 1.`3sqrt(5)times sqrt(5)=`

Evaluate : sqrt(3) times sqrt(5) =

Evaluate : sqrt(3)times sqrt(5)

Evaluate : sqrt(-5) times sqrt(-3)

Evaluate : ( sqrt(2) - sqrt(3) + sqrt(5) )times ( sqrt(2) + sqrt(3) + sqrt(5) )

Evaluate : ( sqrt(5) + sqrt(2) ) times ( sqrt(5) + sqrt(2) )

Evaluate : (sqrt(5) )^-3 times (sqrt(2))^-3

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

Evaluate : ( 3 + sqrt5 )^2 times (3- sqrt5)^2 = ?

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}

(a) find value of "a" (7+3sqrt(5))/(5+2sqrt(5))=1+a sqrt(5)