C-03-Q057mediumsingle_mcqIf a2+b2+c2=9a^2+b^2+c^2=9a2+b2+c2=9 and ab+bc+ca=8ab+bc+ca=8ab+bc+ca=8, (a+b+c)2=?(a+b+c)^2 = ?(a+b+c)2=?a252525b171717c111d55