Question:`(x^3 - y^3)/(x - y)^3 + 3xy(x - y)` কে লঘিষ্ট আকারে প্রকাশ করলে হয়-- 

A `x^3 - xy + y^3` 
B `(x - y)/(xy)` 
C 1 
D `(3xy)/(x + y)` 

+ Answer
C 

+ Explanation
`(x^3 - y^3)/((x - y)^3 + 3xy (x - y))`

  `= (x^3 - y^3)/(x^3 - y^3) = 1`

+ Report

Irin Moni

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