Resposta:
a. (a-b)³= a³-3a²b+3ab²-b³
b. (x-4)³= x³-3x².4+3x.4²-4³ = x³-12x²+48x-64
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Resposta:
a. (a-b)³= a³-3a²b+3ab²-b³
b. (x-4)³= x³-3x².4+3x.4²-4³ = x³-12x²+48x-64