Respuesta :

Answer:

-a^2-a+12

Step-by-step explanation:

Distribute.

-a^2-4a+3a+12

Add common factors

-a^2-a+12

Answer:

-a^2 - a + 12

Step-by-step explanation:

(-a + 3)(a + 4)

Open the bracket

-a^2 - 4a + 3a + 12

-a^2 - a + 12

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