Prove that (n + 1)^2 - n^2 is always odd. Simplifying gives:

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

B) 2n + 1

(n + 1)^2 - n^2 = n^2 + 2n + 1 - n^2 = 2n + 1, which is odd. SLO M-09-B-15 · Knowledge

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