MCQ Practice Mathematics 📖 a + b =7 এবং ab = হলে a2 + b2 + 3ab = কত? ক 29খ 49গ 59ঘ 69 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 This question appeared in Primary Recruitment Model Test 2021 (02) Question 47 Primary Recruitment Model Test 2021 (02) Question 47 Primary Recruitment Model Test 2021 (02) Question 47 Primary Recruitment Model Test 2021 (02) Question 47 Previousa + b =7 এবং a - b = হলে 8ab ( a2 + b2 ) = কত? Nexta + b = 9m, ab = 18m2 হলে = কত?