C-03-Q040mediumsingle_mcq(a+b+c)2=?(a+b+c)^2 = ?(a+b+c)2=?aa2+b2+c2+2ab+2bc+2caa^2 + b^2 + c^2 + 2ab + 2bc + 2caa2+b2+c2+2ab+2bc+2caba2+b2+c2+ab+bc+caa^2 + b^2 + c^2 + ab + bc + caa2+b2+c2+ab+bc+caca2+b2+c2−2ab−2bc−2caa^2 + b^2 + c^2 - 2ab - 2bc - 2caa2+b2+c2−2ab−2bc−2cada2+b2+c2a^2 + b^2 + c^2a2+b2+c2