how do i figure out the answer i am confused on how to solve

Answer:
[tex]14v^3 + 13v[/tex]
Step-by-step explanation:
[tex](5v^3 + 4v)-(-9v - 9v^3)[/tex]
Answer.
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When we have an equation like this, what we need to do is switch the subtraction sign into an addition sign, which then follows with combining like terms.
[tex](5v^3 + 4v)-(-9v - 9v^3)[/tex]
[tex](5v^3 + 4v)+(-9v - 9v^3)[/tex]
Distribute :
[tex]5v^3 + 4v+9v +9v^3[/tex]
Combine like terms :
[tex]5v^3 + 9v^3 = 14v^3[/tex]
[tex]4v+ 9v = 13v[/tex]
[tex]14v^3 + 13v[/tex]
Answer:
14v^3+13v
Explanation:
5v^3+4v-(-9v-9v^3)
5v^3+4v+9v+9v^3
14v^3+13v