Question

cubo da soma de dois termos (a+2b)³

Answer 1

(a + 2b)³ ---- (a + 2b) . (a + 2b) . (a + 2b) --- (a² + 4ab + 4b²) . (a + 2b)

a³ + 4a²b + 4ab² + 2a²b + 8ab² + 8b³ ------- a³ + 6a²b + 12ab² + 8b³