Respuesta :

Answer:

-4 • (x - 5) • (2x + 3)

Step-by-step explanation:

Answer:

I wasn't sure if it was a 8x^2 or a -8x^2. So I have done both.

The factor of -8x^2+28x+60 is -8(x^2-11).

The factor of 8x^2+28x+60 is 4(2x^2+7x+15)