Answer:
4u^3 + 6u^2 - 7u + 9
Explanation:
(2u3 + 6u2 + 3) + (2u3 – 7u + 6)
Remove the brackets.
2u^3 + 6u^2 + 3 + 2u^3 - 7u + 6
2u^3 + 2u^3 = 4u^3
6u^2
- 7u
3 + 6 = 9
Now just read down
4u^3 + 6u^2 - 7u + 9
The answers don't seem to connect with the question. Is U equal to something?