Mathematics, 17.12.2020 22:10 levy72

3. A un cartón rectangular cuyos lados miden 4 cm y 5 cm se le ha recortado en cada esquina un cuadrado de lado x. De las
siguientes expresiones, ¿cual permite calcular el área y del cartón sin las esquinas?
es igual al pre
tanto, el ar
dex. 1. tie
al ax 4x
a la segu
fundo grad
irea del si
a) y 4x?
b) y 20 - 4x
c) y 20 - 4x
d) y 4120 - )

3. A un cartón rectangular cuyos lados miden 4 cm y 5 cm se le ha recortado en cada

esquina un cu

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3. A un cartón rectangular cuyos lados miden 4 cm y 5 cm se le ha recortado en cada esquina un cuad...