What is the answer to (a+b+c) ²=?

 The answer to (a+b+c)² is:

(a+b+c)² = (a+b+c) x (a+b+c) = a(a+b+c) + b(a+b+c) + c(a+b+c) (using distributive property) = a² + ab + ac + ba + b² + bc + ca + cb + c² (using distributive property again) = a² + b² + c² + 2ab + 2ac + 2bc

So, the answer to (a+b+c)² is a² + b² + c² + 2ab + 2ac + 2bc.

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