Respuesta :

tomson1975

Greetings from Brasil...

Let us solve by parts. Power first

(X + 2)² = X² + 2.2.X + 2² = X² + 4X + 4

Rewriting

(X - 3).(X² + 4X + 4)             applying distributive property

X³ + 4X² + 4X - 3X² - 12X - 12

X² + X² - 8X - 12