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- Φ² = Φ+1Lv 74 weeks agoFavorite Answer
2x-4 = 0 when x=2, which eliminates (a) and (c) which have the switch from one piece to another at x=0.

-(2x-4) = -2x + 4 or 4 - 2x, eliminating (b) which instead has -2x-4.

The correct answer is (d)

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