Find: `(sqrt7 +sqrt3)(3-sqrt3)`

Find (sqrt3 - sqrt 2)/(sqrt 3+sqrt 2) -(sqrt3 + sqrt 2)/(sqrt 3-sqrt 2) +1/(sqrt2+1)-1/(sqrt2-1)

Solve: (sqrt 3+ sqrt2)(sqrt2-sqrt3)

Find (sqrt 3 - sqrt 5)(sqrt 5+ sqrt3)

Find : (sqrt5+sqrt2)(sqrt3+sqrt2)

(iii) (sqrt 5+ sqrt 3)/(sqrt5-sqrt3)+(sqrt5-sqrt3)/(sqrt5+sqrt3) =?

sqrt3 xx sqrt3

Simplify: (3+sqrt 3)(3-sqrt3)

solve (3sqrt5 +sqrt3)/(sqrt5 -sqrt3)

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

If x= ( sqrt5- sqrt3)/ ( sqrt5+ sqrt3) and y= ( sqrt5+ sqrt3)/( sqrt5- sqrt3) find the value of x^(2) + y ^(2)