Preference

প্রশ্নঃ a/(a + b) + b/(a - b) = কত?

  1. ক.
    a² + b²
  2. খ.
    (a² + b²)/(a² - b²)
  3. গ.
    (a - b)/(a + b)
  4. ঘ.
    a² - b²
উত্তরঃ
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