(a+b+c)^2

general knowledge math & puzzles

  1. (a^2+b^2+c^2)

  2. (a^2+b^2+c^2+ab+bc+ca)

  3. all of these

  4. (a^2+b^2+c^2+2ab+2bc+2ca)

Show answer
Correct Option: C

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