BaldorBásico1 respuestas

(3x - 7)² - 5(2x + 1) (x - 2) = - x² - [ - (3x + 1)]?

(3x - 7)² - 5(2x + 1) (x - 2) = - x² - [ - (3x + 1)].

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<img src="https://tex.z-dn.net/?f=9%20x%5E%7B2%7D%20-42x%2B49%2B%28-10x-5%29%28x-2%29%3D-%20x%5E%7B2%7D%20%2B3x%2B1" /> <img src="https://tex.z-dn.net/?f=9%20x%5E%7B2%7D%20-42x%2B49%2B%28-10%20x%5E%7B2%7D%20%2B15x%2B10%29%2B%20x%5E%7B2%7D%20-3x-1" /> <img src="https://tex.z-dn.

Mejor respuesta

Princesitapeggy
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<img src="https://tex.z-dn.net/?f=9%20x%5E%7B2%7D%20-42x%2B49%2B%28-10%20x%5E%7B2%7D%20%2B15x%2B10%29%2B%20x%5E%7B2%7D%20-3x-1" />

<img src="https://tex.z-dn.net/?f=-30x%3D-58%20%5C%5C%20x%3D%20%5Cfrac%7B29%7D%7B15%7D%20" />.