MCQ Practice Mathematics 📖 যদি √x + 1/√x = a হয়, তবে x2 + 1/x2 এর মান কত? A a4 + 4a2 + 2 B a4 - 2a2 + 2 C a4 - 4a2 + 2 D a4 - 4a2 - 2 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