(x+2)(x+3) - x2 + 5x + 6, (x+5)(x+7) - x2 + 12x + 35, (x-2)(x+3) - x2 + x - 6, (x-2)(x-3) - x2 - 5x + 6, (x+5)(x-5) - x2 - 25, (x+7)(x+7) - x2 + 14x + 49, (3x+2)(2x+3) - 6x2 + 13x + 6, (2x-1)(x+3) - 2x2 + 5x - 3, (5x+2)(2x+3) - 10x2 + 16x + 6, (7x-1)(2x-5) - 14x2 - 37x + 5,

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