Evaluate :
`( sqrta + sqrtb ) ( c + sqrtd )`

(sqrta + sqrtb)^2 = ?

(a + b)(sqrta + sqrtb ) (sqrta - sqrtb)= "________"

If x = (4 sqrt(ab))/(sqrt a + sqrt b) , then what is the value of (x + 2sqrt a)/(x - 2 sqrta) + (x + 2 sqrtb)/(x - 2 sqrt b) " (when " a ne b) ?

Evaluate : ( b times c ) times ( c times a )

Evaluate : ( b times c ) times ( c times a ) =

If y = tan^(-1) ((sqrta + sqrtx)/(1 - sqrt(ax))) " then " (dy)/(dx) = ?