Answer:
-3x^3 - 8x + 9
Step-by-step explanation:
Hello!
(I would love to be marked coolest) Anyway, let's get started:
I'd believe you want 7x^3 − 16x + 18 - 4x^3 − 6x^3 + 8x − 9 solved.
In that case we first can group like terms:
7x^3 - 4x^3 - 6x^3 - 16x + 8x + 18 - 9
Then we add similar elements:
[tex]-3x^3-16x+8x+18-9[/tex]
Then, we add similar elements (again):
[tex]-3x^3-8x+18- 9[/tex]
Finally, we can add and subtract our numbers:
[tex]-3x^3-8x +9[/tex]
Thus, the answer to your question is [tex]\boxed{\boxed{-3x^3-8x+9}}[/tex].
Hope this helps!
- Sahkfam
