Explicación paso a paso:
(a + 2)³ = a³ + 3.a².2 + 3.a.2² + 2³= a³ + 6a² + 12 a +8
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Explicación paso a paso:
(a + 2)³ = a³ + 3.a².2 + 3.a.2² + 2³= a³ + 6a² + 12 a +8