Preference

প্রশ্নঃ

12{(a+b)2+(a-b)2} = ?

  1. ক.

    a2 + b2

  2. খ.

    a2 - b2

  3. গ.

    (a + b)22 - (a - b)22

  4. ঘ.

    (a + b)2 + (a - b)2

উত্তরঃ
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