Q. 6 B4.0( 13 Votes )

If x + y <span la

Answer :

Given: x + y x – y

It can be written as,


x + y = k(x – y)



Apply componendo dividend,





Cube on both sides,



Again apply componendo dividend,



i.e. x3 + y3 x3 - y3


Hence,


x3 + y3 x3 - y3


Hence proved.


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