Si a un cuadrado de lado x se le aumenta 5 a uno de sus lados y se le disminuye 9 a el otro, el área es de 45.
¿Cuál es la medida del cuadrado original?
Update
LOL, perdón por no hacer un Update de este tema :Laugh:
La respuesta era 11.7
Saqué 10 en ese ejercicio :Shiny:
Cuando me fui aún no tenía la respuesta, así que le pregunté al maestro :Laugh:
Aún así, gracias a Dre4d, y a todos los que se tomaron la molestia en ayudarme :Smile:
Sientanse libres de agarrar sus galletas.
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