Respuesta:
Holi
Explicación paso a paso:
Binomio al cubo :
(a+b)³=a³+b³+3ab(a+b)
(x+x-¹)³=3³
x³+x-³+3xx-¹(x+x-¹)=27
X³+x-³+3(3)=27
X³+x-³=27-9=18
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Respuesta:
Holi
Explicación paso a paso:
Binomio al cubo :
(a+b)³=a³+b³+3ab(a+b)
(x+x-¹)³=3³
x³+x-³+3xx-¹(x+x-¹)=27
X³+x-³+3(3)=27
X³+x-³=27-9=18