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

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

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

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

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

simplify (5+sqrt(7))(5+sqrt(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}

Find the value of a and b if (2+5sqrt(7))/(2-5sqrt(7))=(a+sqrt(7)b)

(5-sqrt(-7))(5+sqrt(-7))(2-sqrt(-1))(2+sqrt(-1))

Simplify the following expressions.(i) (5+sqrt(7))(2+sqrt(5)) (ii) (5+sqrt(5))(5-sqrt(5)) (iv) (sqrt(11)-sqrt(7))(sqrt(11)+sqrt(7))

Simplify the following expressions. (i) (5+sqrt(7))(2+sqrt(5)) (ii) (5+sqrt(5))(5-sqrt(5)) (iii) (sqrt(3)+sqrt(7))^2 (iv) (sqrt(11)-sqrt(7))(sqrt(11)+sqrt(7))