" Phow that "3sqrt(7)" is an irrecesional nembe "

3sqrt(1728)=?-7

Show that (sqrt(7) + isqrt(3)) / (sqrt(7) - isqrt(3)) + (sqrt(7) - isqrt(3)) / (sqrt(7) + isqrt(3)) , is real.

sqrt(3)(sqrt(7)-sqrt(3))

Multiply 3sqrt(7) by 5sqrt(7)

(3 + sqrt7)(3 - sqrt7)

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

By how much does 5sqrt(7) - 2sqrt(5) exceed 3sqrt(7) - 4sqrt(5) ?

(sqrt(7))/(3sqrt(3)) , in rational denominator is _____ .

If both a and b are rational numbers,find the values of a and b in each of the following equalities :(sqrt(3)-1)/(sqrt(3)+1)=a+b sqrt(3)( ii) (3+sqrt(7))/(3-sqrt(7))=a+b sqrt(7)(5+2sqrt(3))/(7+4sqrt(3))=a+b sqrt(3)( iv) (5+sqrt(3))/(7-sqrt(3))=47a+sqrt(3)b(sqrt(5)+sqrt(3))/(sqrt(5)-sqrt(3))=a+b sqrt(15) (iv) (sqrt(2)+sqrt(3))/(3sqrt(2)-2sqrt(3))=1-b sqrt(3)

If both a and b are rational numbers,Find a and b*(3+sqrt(7))/(3-sqrt(7))=a-b sqrt(7)