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1950 AMC 12 Question 15

AMC12 · 1950 AMC 12

Question 15

The real factors of $x^2+4$ are:
  1. $(x^2+2)(x^2+2)$
  2. $(x^2+2)(x^2-2)$
  3. $x^2(x^2+4)$
  4. $(x^2-2x+2)(x^2+2x+2)$
  5. Non-existent