(x + 3)(x - 2) - x2 + x - 6, (x + 2)(x + 4) - x2 + 6x + 8, (x + 5)(x - 3) - x2 + 2x - 15, (x - 5)(x - 3) - x2 - 8x + 15, (x - 4)(x + 5) - x2 + x - 20,

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