C-03-Q015mediumsingle_mcq(a+b)2=?(a+b)^2 = ?(a+b)2=? (Corollary 3)a(a−b)2+4ab(a-b)^2 + 4ab(a−b)2+4abb(a−b)2−4ab(a-b)^2 - 4ab(a−b)2−4abc(a−b)2(a-b)^2(a−b)2d(a−b)2+2ab(a-b)^2 + 2ab(a−b)2+2abব্যাখ্যাUsing (a+b)2=a2+2ab+b2(a+b)^2 = a^2 + 2ab + b^2(a+b)2=a2+2ab+b2 and (a−b)2=a2−2ab+b2(a-b)^2 = a^2 - 2ab + b^2(a−b)2=a2−2ab+b2, their difference is 4ab4ab4ab, so (a+b)2=(a−b)2+4ab(a+b)^2 = (a-b)^2 + 4ab(a+b)2=(a−b)2+4ab.