MCQ Practice Mathematics 📖 যদি x + 3y = 40 এবং y = 3x হয় তবে x = ? A 10 B 12 C 4 D 6 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 Previousযদি √x + 1/√x = a হয়, তবে x2 + 1/x2 এর মান কত? Nextযদি (x - y)2 = 12 এবং xy = 1 হয়, তবে x2 + y2 = কত?
