Answer:
Sum is 9u³ + 6u² - 7u + 6 .
Explanation:
Given : (2u³+ 6u² + 2) + (7u³ – 7u + 4)
To find: Simplify the sum.
Solution : We have given (2u³+ 6u² + 2) + (7u³ – 7u + 4).
On removing the parenthesis
2u³+ 6u² + 2 + 7u³ – 7u + 4.
Combining like terms
2u³ + 7u³ + 6u² -7u +2 + 4.
9u³ + 6u² - 7u + 6 .
Therefore, Sum is 9u³ + 6u² - 7u + 6 .