Most people get this one wrong on their first try! 😲

Given:

• a + b = 28
• a − b = 8

Can you figure out the value of 4ab?

📝 Take a moment to solve it before looking at the answer.

👇 Comment your answer below!

✅ Answer: 720

Solution:

• $a = 18$a=18
• $b = 10$b=10

So:

4ab = 4 × 18 × 10 = 720 🎉