Multiple choice

What is (u + 12) (u - 12) in expanded form?

  1. u2 + 144

  2. u2 - 24 + 144

  3. u2 - 144

  4. u2 + 24 + 144

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

(u + 12) (u - 12) = u2 - 12u + 12u - 144 (Using Foil) = u2 - 144