Multiply:
` 3+sqrt{7}, 3-sqrt{7}`

(3-sqrt7)(3+sqrt7)=?

Multiply : 5a - 1 by 7a - 3

(i) Find a and b when (3+ sqrt(7)) /(3-sqrt(7))= (a+bsqrt(7))

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

Solve each of the following equatins : 3sqrt7x^(2)+4x-sqrt7=0

Simplify : (7)/(sqrt(17) - 2sqrt3)-( 3)/(sqrt(17) +2sqrt3)

Rationales the denominator and simplify: (i) (sqrt(3)-\ sqrt(2))/(sqrt(3)\ +\ sqrt(2)) (ii) (5+2\ sqrt(3))/(7+4\ sqrt(3))

State in each case whether true or false: 3sqrt(7)-2sqrt(7)= sqrt(7)

If sqrt (7 sqrt (7 sqrt7 sqrt7 sqrt7)) = 7 ^(x) then find the value of x

Solve the equation 3sqrt((x+3))-sqrt((x-2))=7