Respuesta :

Answer:

-3x^2 - 5x - 15

Step-by-step explanation:

PEMDAS

-4x^2 -5(x+3) + x^2

(-4x^2+x^2) -5(x+3)

-3x^2 -5(x+3)

-3x^2 - 5x - 15

Answer:

-3x^2 - 5x - 15

Step-by-step explanation: