Question

Obtenha a expansão para (3 + a)^8

Answer 1

$(a + 3)^{8} = \binom{8}{0} . \: a^{8} + \binom{8}{1}. \: a^{7} . \: 3 + \binom{8}{2}. \: a^{6}. \: 3^{2} + \binom{8}{3}. \: a^{5}. \: 3^{3} + \binom{8}{4}. \: a^{4}. \: 3^{4} + \binom{8}{5}. \: a^{3}. \: 3^{5} + \binom{8}{6}. \: a^{2}. \: 3^{6} + \binom{8}{7}. \: a \: . \: 3^{7} + \binom{8}{8}. \: 3^{8}$

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