(5+sqrt(7))times(7-sqrt(5))

Prove that (1)/(sqrt(7))=(1)/(sqrt(7))times(sqrt(7))/(sqrt(7))

Solve : ( 5 + sqrt(7)) times ( 5 - sqrt(7))

Evaluate : ( sqrt(3) + sqrt(7) ) times ( sqrt(3) + sqrt(7) )

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}

1/(sqrt(7)+sqrt(3))\times (sqrt(7)-sqrt(3))/(sqrt(7)-sqrt(3))

simplify (5+sqrt(7))(5+sqrt(2))

Simplify (5+sqrt(7))(5+sqrt(2))

Solve : 7/ sqrt(5) times 4/ sqrt(5)

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