Answer:
7k3 - k2 - 3k + 16.
Step-by-step explanation:
5k3 - 3k + 7 - (-2k3 + k2 - 9)
First distribute -1 over the parentheses:
= 5k3 - 3k + 7 + 2k3 - k2 + 9
Now simplify like terms:
= 7k3 - k2 - 3k + 16 (answer).
Answer: [tex]7k^{3}-k^{2} -3k+16[/tex]
Step-by-step explanation:
1. You have the following expression:
[tex]5k^{3} -3k+7-(-2k^{3}+k^{2}-9)[/tex]
2. Distributive the negative sign that is in front of the parentheses:
[tex]5k^{3} -3k+7+2k^{3}-k^{2}+9[/tex]
3. Now, you must add like terms, then you obtain the following result:
[tex]7k^{3}-k^{2} -3k+16[/tex]
