Simplify the left-hand side to complete the proof: (x + 2)(x - 2) + 4 equiv

  1. x^2
  2. x^2 + 4
  3. x^2 + 8
  4. x^2 - 8
Answer

A) x^2

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

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