C-03-Q026mediumsingle_mcq2(ab+bc+ac)=?2(ab+bc+ac) = ?2(ab+bc+ac)=? (Corollary 8)a(a+b+c)2+(a2+b2+c2)(a+b+c)^2 + (a^2+b^2+c^2)(a+b+c)2+(a2