if a+b+c = 0  then the value of 
(x/y)^ (a^2+b^2) * (y/x)^(c^2) *[((y/x)^-1))^2ab]* (y/x)^((a+b)/c) * (y/x) is equal to 
a.1 b. 0 c. x/y d. y/x . 
sorry last time i made a mistake in the question 

ok this answer this f**king hard but I will try ;-;
(after 3 hours)
OMG This is so f**king hard ); 
GO f**k with this ques
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