C-03-Q020mediumsingle_mcqa2+b2=?a^2 + b^2 = ?a2+b2=? (অন্যরূপ)a(a−b)2+2ab(a-b)^2 + 2ab(a−b)2+2abb(a−b)2−2ab(a-b)^2 - 2ab