Using a^2 - b^2 = (a + b)(a - b), evaluate 205^2 - 195^2.

  1. 4,200
  2. 41,830
  3. 4,000
  4. 100
Answer

C) 4,000

205^2 - 195^2 = (400)(10) = 4000. SLO M-09-A-21 · Application

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