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(- 2k ^ 3 - 7k ^ 2 + 5k) + (6k ^ 2 + 3k) =

Sagot :

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.