MCQ Practice Mathematics 📖 If a3 - b3 = 513 and a - b = 3, then ab =? A 34 B 45 C 54 D 55 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 PreviousIf a mark of 76 or higher represents A grade, what is the nearest percentage of students who receive an A? NextIf Taka 4500 was invested in bonds of acorporation when the price per bond was Tk.9.00 and Taka 3000 was invested in bonds of...