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Gerardoelpro3365
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<img src="https://tex.z-dn.net/?f=%20xy-4x%2By-4%20" /><img src="https://tex.z-dn.net/?f=%20%3D%5Cleft%28xy%2By%5Cright%29%2B%5Cleft%28-4x-4%5Cright%29%20" /><img src="https://tex.z-dn.net/?f=%20%3Dy%5Cleft%28x%2B1%5Cright%29-4%5Cleft%28x%2B1%5Cright%29%20" /><img src="https://tex.z-dn.net/?f=%20%3D%5Cleft%28x%2B1%5Cright%29%5Cleft%28y-4%5Cright%29%20" />¡Espero haberte ayudado Mariaarizapizapei6ol!