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Sticky Note
Expression ( a+b)^2 = ?
  1. a^2 +2ab +b^2
  2. a^2 -2ab +b^2
  3. a^2 + b^2
  4. None
Explanation

The formula of (a+b)

whole square says (a + b)2 = a2 + 2ab + b2.


ND-21-5-2023

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