(x + 2)(x + 5) - x2 + 7x + 10, (y - 3)(y - 4) - y2 - 7y + 12, (y + 1)(y + 8) - y2 + 9y + 8, (2x - 1)(x + 3) - 2x2 + 5x - 3, (x - 4)(x + 8) - x2 + 4x - 32, (2x + 4)(x - 5) - 2x2 - 6x - 20,

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