THE QUESTION IS ABSOLUTELY RIGHT

I think that the right hand side must be 4xy(x²-y²).I nudged u the same but u said that the question is absolutely correct.But I still think it is so,b'coz then It can be solved as follows

(x-y)f(x+y)-(x+y)f(x-y)=[(x+y)²-(x-y)²](x+y)(x-y)

This gives f(x)=x³,just by comparing both sides and hence the two curves are

y²+x=0 and x²+y²=12 which are a parabola and a circle.

Thus,The area can be calculated by finding points of intersection and applying corresponding integrals.

ne one with its solution??

yup all u r right but who can say when there is a printing mistake.