MCQ Practice Mathematics বাংলাদেশ পরিসংখ্যান ব্যুরোর (BBS) পরিসংখ্যান সহকারী নিয়োগ পরীক্ষা-২০২০ 📖 a + b = 9m এবং ab = 18m2 হলে a - b এর মান কত? 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 bbs Recruitment Question Bank 2020 Question 47 bbs Recruitment Question Bank 2020 Question 47 Previousa+b = 9, a-b = 7 হলে ab কতো ? Nexta + b = 7 এবং ab = 12 হলে, $\frac{1}{a^{2}}$ + $\frac{1}{b^{2}}$ এর মান কত ?
