Answer:
[tex]14u^{3}+4u^{2}-6u+11[/tex]
Step-by-step explanation:
The question is to simplify [tex](7u^{3}+4u^{2}+7)+(7u^{3}-6u+4)[/tex]
We combine like terms, as in, combine cubes with cubes, squares with squares, numbers with numbers and so on.
- There are 2 cubed terms, so they should be combined.
- There are 2 numbers, so they should be combined.
- Others, leave as is.
So we have:
[tex](7u^{3}+4u^{2}+7)+(7u^{3}-6u+4)\\(7u^3+7u^{3})+4u^{2}-6u+(7+4)\\14u^{3}+4u^{2}-6u+11[/tex]
This is the simplified form of the sum given.
