Question

A forma fatorada de a³ + 27 é: A(a + 3)(a - 3) B(a - 3)² C(a + 3)(a² - 3a + 9) D(a - 3)(a² - 3a + 9) E(a + 3)(a² + 6a + 9)

Answer 1

Resposta:

c) (a+3)(a²-3a+9) = a³-3a²+9a+3a²-9a+27 = a³+27