Simplify the left-hand side to complete the proof: n^2 - (n - 1)^2 equiv

  1. 2n + 1
  2. n - 1
  3. 2n - 1
  4. 1
Answer

C) 2n - 1

Expanding and collecting like terms gives n^2 - (n - 1)^2 = 2n - 1. SLO M-09-B-15 · Knowledge

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