Preference

প্রশ্নঃ x/(a - b) - x/(a + b) = কত?

  1. ক.
    0
  2. খ.
    x/(a - b)
  3. গ.
    x/(a + b)
  4. ঘ.
    2bx/(a² - b²)
উত্তরঃ
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