Find the value of a and b if `(2+5sqrt7)/(2-5sqrt7)=(a+sqrt7b)`

Find the value of a and b if (sqrt7-2)/(sqrt7+2)=asqrt7+b

Find the value of a an db if (sqrt(7)-2)/(sqrt(7)+2)=asqrt(7)+b

Find the value of a and b if (7+3sqrt(5))/(3+sqrt(5))-(7-3sqrt(5))/(3-sqrt(5)) =a + bsqrt(5)

Find the value of a and b . (sqrt11 - sqrt7 ) / (sqrt 11 + sqrt 7) = a - b sqrt 77 (i) a = 9/2 , b = 1/2 (ii) a = 2/9, b = 2/3 (iii) a = 2/5, b = 1/2 (iv) a = 9/2, b =5/2

Find the values of a and b in each of the (sqrt(7)-2)/(sqrt(7)+2)= a sqrt(7)+b

Find the values of a and b((5+2*sqrt(3))/(7+4*sqrt(3)))

Find the value of a and b respectively, if (5+sqrt(3))/(7-4sqrt(3))=47a+sqrt(3)b .

Find the values of a and b such that (7+3sqrt5)/(3+4sqrt5)=a+bsqrt5

Simplify : sqrt(7)-3/5sqrt(7)+2sqrt(7)