Answer:
8x^3 - x^2 + 1
Step-by-step explanation:
First line the like terms up, so they can be easily identified. Like so ⤵⤵⤵ (and don't forget to add zeros in places that don't have like terms) then solve like a normal addition problem.
[tex] { \: \: \: \ \: \: (6x {}^{3} + 4x {}^{2} + 1) } \\ \frac{ + \ \: (2x {}^{3} - 5x {}^{2} + 0) }{ \: \: \: \: \: \: (8x {}^{3} - \: x {}^{2} + 1 \: ) } [/tex]
Hope this helped :)
