Simplify the sum. (2u^3 + 6u^2 + 2) + (7u^3 – 7u + 4)

When adding polynomials you've got to combine all like terms

2u^3 + 7u^3= 9u^3 (They both are raised to the third with the same variable.)

6u^2 (Stays the same because there are no other numbers that are raised to the second)

-7u (Again there are no other numbers to combine this with)

2+4=6 (Add 2+4 as normal)

Now you put together all the numbers that are left for your final answer

9u^3+6u^2-7u+6

Hope this helps ;)

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