MCQ Practice Mathematics 📖 A + B + C = 9, AB + BC + CA = 31, A2 + B2 + C2 =? A 19 B 29 C 30 D 49 Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up Previousa + b + c = 0 হলে a3 + b3 + c3 এর মান কত? Nexta + b = c হলে, a3 + b3 + 3abc = কত?
