Answer:
[tex] - {2k}^{3} - {k}^{2} + 8k[/tex]
Step-by-step explanation:
1) Remove parentheses.
[tex] - {2k}^{3} - {7k}^{2} + 5k + {6k}^{2} + 3k[/tex]
2) Collect like terms.
[tex] - {2k}^{3} + ( - 7k^{2} + {6k}^{2} ) + (5k + 3k)[/tex]
3)Simplify.
[tex] - {2k}^{3} - {k}^{2} + 8k[/tex]
Therefor, the answer is -2k³ - k² + 8k.
