Respuesta :

verrge

Answer:

-4x^2-11x+13

Step-by-step explanation:

(-x²+9)+(-3x²-11x+4)

=-x^2+9-3x^2-11x+4

=-x^2-3x^2-11x+9+4

=-4x^2-11x+9+4

=-4x^2-11x+13