MCQ Practice Mathematics 📖 If a3 - b3 = 513 and a - b = 3, what is the value of ab? A 35 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 + b = 8 and ab = 15, what is the value of a2 + b2 ? NextIf x + y 1/a and x - y = a then the value of x2 - y2