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1. x - y = 2 এবং xy= 24 হলে x + y এর মান ___

  • A. ± 4
  • B. ± 4
  • C. ± 4
  • D. ± 4

Answer: Option D

Explanation:

(X+y)2=(X- y)2+4xy

>.             =(2)2+4.24

>.             =4+96

>(x+y)2    =100

>(x+y).      =10

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