[" 1f a md b arm natural numbers,then "],[(sqrt(a)+sqrt(b))(sqrt(a)-sqrt(6))" is rational.Is it true? "]

If a and b are positive natural numbers (sqrt(a)+sqrt(b))(sqrt(a)-sqrt(b))=a-b

If a and b are rational numbers and (sqrt(2)+2sqrt(3))/(2sqrt(2)+sqrt(3))=a+b sqrt(6)

(sqrt(2)+sqrt(3))/(3sqrt(2)-2sqrt(3))=2-b sqrt(6) find b

If a and b are positive natural numbers (sqrt(a)+sqrt(b))(sqrt(c)+sqrt(d))=sqrt(ac)+sqrt(ad)+sqrt(bc)+sqrt(bd)

If a and b are rational numbers and (sqrt(11)-sqrt(7))/(sqrt(11) +sqrt(7))=a - b sqrt(77) . find the value of a and b.

(3-sqrt(6))/(3+2sqrt(6))=a sqrt(6)-b

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

Let a,b in R.sqrt(a)sqrt(b)=sqrt(ab) is not true if

If a and b are two rational numbers and (2+sqrt(3))/(2-sqrt(3))=a+bsqrt(3) , what is the value of b ?