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If P= (x^3+y^3)/((x-y)^2+3xy), Q= ((x+y)...

If `P= (x^3+y^3)/((x-y)^2+3xy), Q= ((x+y)^2-3xy)/(x^3-y^3)` and `R=((x+y)^2+(x-y)^2)/(x^2-y^2)`, then `(P div Q) xx R` is equal to:
यदि`P= (x^3+y^3)/((x-y)^2+3xy), Q= ((x+y)^2-3xy)/(x^3-y^3)` तथा `R=((x+y)^2+(x-y)^2)/(x^2-y^2)` है, तो `(P div Q) xx R` का मान क्या होगा ?

A

`2(x^2+y^2)`

B

4xy

C

`x^2+y^2`

D

2xy

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