Using a^2 - b^2 = (a + b)(a - b), evaluate 1001^2 - 999^2.

  1. 1,001,002
  2. 4,000
  3. 4,200
  4. 4
Answer

B) 4,000

1001^2 - 999^2 = (2000)(2) = 4000. SLO M-09-A-21 · Application

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