Answer:
D) 3x^4 + 22x^3 + 31x^2 - 6
Step-by-step explanation:
1. Use distributive property throughout your equation.
2. Remove all opposites.
3. Add up all like terms.
4. Finish equation!
Sorry I wasn’t able to show you how I did it, but it’s hella hard to type out. Hopefully you got the concept and it helps. Good luck! :)