Ejercicio 1:
x³+x²y+xy² +(-x²y-xy²-y³)
-x²y-xy²-y³
x³-y³
Ejercicio 2:
a³+2a²b+ab²+a²b+2ab²+b³
a³+b³+3a²b+3ab² = (a+b)³
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Ejercicio 1:
x³+x²y+xy² +(-x²y-xy²-y³)
-x²y-xy²-y³
x³-y³
Respuesta = x³-y³
Ejercicio 2:
a³+2a²b+ab²+a²b+2ab²+b³
a³+b³+3a²b+3ab² = (a+b)³
Respuesta = (a+b)³