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Respuesta : 1. - (x - 2)(x + 5) = <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" /> + 5x - 2x - 10 = <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" /> + 3x - 102. - (x + 1)(x + 5) = <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" /> + x + 5x + 5 = <img src="https://tex.z-dn.

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Dayannaalina
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Respuesta : 1.

- (x - 2)(x + 5) = <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" /> + 5x - 2x - 10 = <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" /> + 3x - 102.

- (x + 1)(x + 5) = <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" /> + x + 5x + 5 = <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" /> + 6x + 53.

- (x - 5)(x + 3) = <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" /> + 3x - 5x - 15 = <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" /> - 2x - 154.

- (x + 4)(x + 6) = <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" /> + 6x + 4x + 24 = <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" /> + 10x + 245.

- (x - 5)(x + 4) = <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" /> + 4x - 5x - 20 = <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" /> - x - 206.

- (x + 9)(x - 1) = [img = 10] - x + 9x - 9 = [img = 11] + 8x - 97.

- (x + 8)(x - 7) = [img = 12] - 7x + 8x - 56 = [img = 13] + x - 568.

- (x + 7)(x - 4) = [img = 14] - 4x + 7x - 28 = [img = 15] + 3x - 289.

- (x - 2)(x + 6) = [img = 16] + 6x - 2x - 12 = [img = 17] + 4x - 1210.

- (x - 4)(x + 9) = [img = 18] + 9x - 4x - 36 = [img = 19] + 5x - 36.