(a+b+c+d+e+f)2=??????
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Answer:
2a+2b+2c+2d+2e+ 2f
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answer is 2a+2b+2c+2d+2e+2f
but I think your question was(a+b+c+d+e+f)²
according to this answer would be
a²+ 2ab + 2ac + 2ad + 2ae + 2af + b²+ 2bc + 2bd + 2be + 2bf + c²+ 2cd + 2ce + 2cf + d² + 2de + 2df+ e²+ 2ef+ f²
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