MCQ Practice Mathematics 📖 a + b = 4 এবং a - b = 2 হলে a2 + b2 এর মান কত? A 10 B 15 C 20 D 5 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 = 3, ab = 1 হলে a2 - ab + b2 = কত? Nexta + b = 8, a - b = 4 হলে ab = কত?
