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

  1. 2
  2. 0
  3. 4x
  4. 2x
Answer

C) 4x

Expanding and collecting like terms gives (x + 1)^2 - (x - 1)^2 = 4x. SLO M-09-B-15 · Knowledge

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