[Section A] Short Answer-Type Questions
1. Find the product (a? + b2 + c2 - ab - bc - ca) and (a + b + c)
2. Divide (a3 + b3 + c3 - 3abc) by (a + b + c)
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Could you EASILY decompose a^3 + b^3 + c^3 - 3abc into the product of two ... =(a+b+c)3-3(a+b)c(a+b+c)-3ab(a+b+c)=(a+b+c)(a2+b2+c2-ab-bc-ac). Cite.
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