Respuesta :

shary8

Answer:

x2(x+4)-9(x+4)

Step-by-step explanation:

=(x2-9)(x+4)

Answer: D or (x²– 9)(x + 4).

The next one is A (difference-of-squares)

The last one is C (x + 3)(x – 3)(x + 4)

Step-by-step explanation: Edge '21