Find the value of `(x-y)^(2)+(x+y)^(2)`.

If x=2+sqrt(2) and y=2-sqrt(2) , then find the value of (x^(2)+y^(2)) .

if x^(2)+y^(2)+(1)/(x^(2))+(1)/(y^(2))=4 then find the value of x^(2)+y^(2)

If x = cosecA + cosA and y = cosecA - cosA, then find the value of (2/(x+y))^2 +((x-y)/2)^2 -1 . यदि x = cosecA + cosA और y =cosecA - cosA, तो (2/(x+y))^2 +((x-y)/2)^2 -1 का मान ज्ञात करें:

If (2x-y) : (5x+3y) = 3:8, then find the value of (x^2+y^2) : (x^2-y^2) . यदि (2x-y) : (5x+3y) = 3:8 है, तो (x^2+y^2) : (x^2-y^2) का मान ज्ञात करें |

If ((2x-y)/(x+2y))=(1)/(2), then find the value of ((3x-y)/(3x+y))

If x^(2)-y^(2) =1 , (x gt y) ,then find the value of log(x-y) (x+y)