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1.  x+y=6 এবং xy =8 হলে  ( x − y ) 2  এর মান কত?

  • A. 6
  • B. 6
  • C. 6
  • D. 6

Answer: Option B

Explanation:

(x - y)² = (x + y)² - 4xy

= 6² - 4×8

= 36 - 32

= 4


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