Respuesta :

Answer:

4(3x - 10)

Step-by-step explanation:

Both terms of the original are divisible by 4. Once we factor it out, divide the original terms by 4 to find what to put in the parentheses.

12x ÷4 = 3x

-40 ÷4 = -10 Put 3x -10 in parentheses

4(3x 10)