Respuesta :

Mibo

Step-by-step explanation:

(x + 12)(x - 6)

x2 - 6x + 12x - 72

x2 + 6x - 72

(x+12)(x-6)
=x(x-6)+12(x-6)
=x^2-6x+12x-72
=x^2+6x-72