First one to get it right gets brainly. All questions go under chat. Hurry

Answer:
B
Step-by-step explanation:
First combine the x³s.
-4x³ + 8x³ = 4x³
Then, combine the x²s.
2x² + 6x² = 8x²
Now, combine the remaining values.
9 + 1 = 10
Finally put it together.
4x³ + 8x² + 10
Hope that helps and maybe earns a brainliest :)