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1. x=15, y=5 হলে x3-3x2y+3xy2-y3=?

  • A. 800
  • B. 800
  • C. 800
  • D. 800

Answer: Option D

Explanation:

 
 
x3-3x2y+3xy2-y3
 
=(a-b)3
 
= (15-5)2
 
=102
 
=100

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