Respuesta :

-a^2-a+12

^ means to the power of
emi280
1. Regroup terms.
(3-a)(a+4)

2. Use the FOIL method: (a+b)(c+d) = ac+ad+bc+bd.
3a+12-a^2-4a

3. Collect like terms.
(3a-4a)+12-a^2

4. Simplify.
-a+12-a^2

hopefully this helps!
good job