Multiple choice

What is (4m + 8) (4m - 8) in expanded form?

  1. 4m2 - 8

  2. 4m2 - 64

  3. 16m2 + 64

  4. 16m2 - 64

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

(4m + 8) (4m - 8) = 16m2 - 32m + 32m - 64 (Using Foil) = 16m2 - 64