SOLUTION: Please help me add the following: (12a3 - 9a2 + 8) + (6a3 + 4a2 -a)

SOLUTION: Please help me add the following: (12a3 - 9a2 + 8) + (6a3 + 4a2 -a)

Algebra.Com

Question 260738: Please help me add the following:
(12a3 - 9a2 + 8) + (6a3 + 4a2 -a)
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given expression

Remove the parenthesis

Group like terms.

Combine like terms.

So
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