If `x/y=6/5` then `(x^2+y^2)/(x^2-y^2)` is

If x:y=5:6, then (3x^2 - 2y^2) : (y^2 - x^2) is

If x:y::5:2, then (x ^(2) +y)/(x + y ^(2)) =?

If x/y = 6/5 , find the value of ( x^2 + y^2 ) / ( x^2 - y^2 )

(x-2y)^(2)-5(x-2y)+6=0

If (x)/(y) = (6)/(5) . The value of (x^(2) + y^(2))/(x^(2) - y^(2))

If x=(sqrt5)+1 and y=(sqrt5)-1 , then what is the value of (x^2//y^2)+ (y^2//x^2) + 4[(x//y) + (y//x)] + 6 ?