Question

4) Utilizando as regras dos produtos notáveis, calcule (x + 3)³:

Answer 1

a^2 + 2ab + b^2
Logo ficará:
(x^2 + 2.x.3 + 3^2).(x+3)
(x^2 + 6x + 9).(x+3)
x^3 + 3x^2 + 6x^2 + 18x + 9x + 27
x^3 + 9x^2 + 27x + 27

Answer 2

(x + 3)³

(x + 3)² • (x + 3)

(x² + 3x + 3x + 9) • (x + 3)

(x² + 6x + 9) • (x + 3)

x³ + 3x² + 6x² + 18x + 9x + 27

x³ + 9x² + 27x + 27