`(5sqrt(7)+2sqrt(7))(6sqrt(7)+3sqrt(7))=?`

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

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

[(5sqrt(7)+sqrt(7))+)4sqrt(7)+8sqrt(7))]-(19)^(2)=?

Rationalise the denominator of (sqrt(7)-sqrt(6))/(sqrt(7)+sqrt(6))

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

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}

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

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