Respuesta :

ganjilaya2019

Answer:

y = x⁴ + 4x³ + x² - 18x - 12

Step-by-step explanation:

y = [(x+3)(x+2)][(x+1)(x-2)] = (x² + 5x + 6)(x² - x - 2) =

x⁴ - x³ - 2x + 5x³ - 5x² - 10x + 6x² - 6x - 12 =

x⁴ + 4x³ + x² - 18x - 12