MCQ Practice Mathematics 📖 x + y এবং x - y = 8 হলে, xy -এর মান কত? A 20 B 40 C 60 D 80 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 Previousx + y = 8; x - y = 6 হলে x2 + y2 এর মান কত? Nextx + y + z = 15 এবং x2 + y2 + z2 = 83 হলে, xy + yz + zx এর মান কোনটি?
