Which One Does Not Belong – Misc

  1.   (x2 + 2x + 1) ÷ (x + 2)
  2.   (-2x2 + 3x – 1) ÷ (x + 2)
  3.   (2x2 + 3x + 1) ÷ (x + 1)
  4.   (x2 + 2x – 1) ÷ (x + 1)
  5.   (-2x2 + 3x + 1) ÷ (x + 1)

 

The solution is #3 because all of the others have remainders/are not factors

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