If   x + y = 3 , `x^2 + y^2 = 5` , then find the value of xy

If 2x^(2)-7xy+3y^(2)=0, then find the value of x:y.

2x + 3y = 6 sqrt3 and 2x - 3y = 6, find the value of xy ?

If x^2 -3x + 1 =0 , and xy = 1 then find the value of x^3-y^3 +3xy

If xy = 6 and x^(2) y + xy^(2) + x+y =63 , then the value of x^(2) +y^(2) is

If 5x^(2) + 4xy + y^(2) + 2x + 1= 0 then find the value of x, y

If x^(2) + y^(2) = 12 xy , then find the value of (x^(2))/(y^(2)) + (y^(2))/(x^(2)) .

If x^(2) + y^(2) -3xy = 0 and x gt y then find the value of log_(xy)(x-y) .

If x - 2y = 3 and xy = 5, find the value of x^2-4y^2 . यदि x - 2y = 3 तथा xy = 5 है, तो x^2-4y^2 का मान क्या होगा ?