What is expansion of the formula (a+b+c)^2
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keyasingh17:
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(a+b+c)^2 = a^2 + b^2 + c^2 + 2ab + 2bc +2ca
or
a^2 + b^2 + c^2 + 2(ab + bc + ca)
or
a^2 + b^2 + c^2 + 2(ab + bc + ca)
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