MatemáticasBásico2 respuestas

(x + 1)(2x + 5) = (2x + 3)(x - 4) + 5?

(x + 1)(2x + 5) = (2x + 3)(x - 4) + 5.

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<img src="https://tex.z-dn.net/?f=2%20x%5E%7B2%7D%20%2B7x%2B5%3D2%20x%5E%7B2%7D%20-5x-12%2B5" /> <img src="https://tex.z-dn.net/?f=7x%2B5x%3D-7-5" /> <img src="https://tex.z-dn.net/?f=12x%3D-12" /> <img src="https://tex.z-dn.net/?

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Josue007

8

<img src="https://tex.z-dn.net/?f=2%20x%5E%7B2%7D%20%2B7x%2B5%3D2%20x%5E%7B2%7D%20-5x-12%2B5" />

<img src="https://tex.z-dn.net/?f=7x%2B5x%3D-7-5" />

<img src="https://tex.z-dn.net/?f=12x%3D-12" />

<img src="https://tex.z-dn.net/?f=X%3D%20-%5Cfrac%7B12%7D%7B12%7D%20" />

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Respuesta 2

AnitaXD

3

2x ^ 2 + 5x + 2x + 5 = 2x ^ 2 + 3x - 8x - 12 + 5

7x - 8x - 3x = - 12 - 4x = - 12

x = 3.