Please kind souls help me 20 points available!

I need help please answer! i will give brainliest!



Fill the blank with a constant, so that the resulting expression can be factored as the product of two linear expressions:

3ab - 12a + 7b +__

Respuesta :

Answer:

-28

Step-by-step explanation:

3ab - 12a + 7b  + ____

3a ( b - 4)  + 7 ( b - 4)

(3a  + 7) ( b - 4)

3ab -12a  + 7b +   - 28