Respuesta :

gmany

Answer:

[tex]\large\boxed{C.\ 9x^3+11x^2}[/tex]

Step-by-step explanation:

[tex]9x^3+8x^2+3x^2\qquad\text{combine like terms}\\\\=9x^3+(8x^2+3x^2)\\\\=9x^3+11x^2[/tex]