- (x
^{2}+ 2x + 1) ÷ (x + 2) - (-2x
^{2}+ 3x – 1) ÷ (x + 2) - (2x
^{2}+ 3x + 1) ÷ (x + 1) - (x
^{2}+ 2x – 1) ÷ (x + 1) - (-2x
^{2}+ 3x + 1) ÷ (x + 1)

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

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