A. 10
B. 14
C. 18
D. 20
🧠 Explanation (Math):
Given: a − b = 3 and a² + b² = 29; find ab Step 1: Use identity (a − b)² = a² + b² − 2ab Step 2: Substitute: 3² = 29 − 2ab ⇒ 9 = 29 − 2ab Step 3: 2ab = 20 ⇒ ab = 10 Final Answer: 10
A. 10
B. 14
C. 18
D. 20
Given: a − b = 3 and a² + b² = 29; find ab Step 1: Use identity (a − b)² = a² + b² − 2ab Step 2: Substitute: 3² = 29 − 2ab ⇒ 9 = 29 − 2ab Step 3: 2ab = 20 ⇒ ab = 10 Final Answer: 10
