Multiple choice

What is 2(7m + 10) (7m - 10) in expanded form?

  1. 98m2 - 200

  2. 99m2 + 200

  3. 98m2 + 200

  4. 200m2 - 900

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

2(7m + 10) (7m - 10) = 2(49m2 - 70m + 70m - 100) (Using Foil) = 2(49m2 - 100) = 98m2 - 200