5. (9r 3 + 5r 2 + 11r) + (-2r 3 + 9r – 8r 2) Question 5. (9r 3 + 5r 2 + 11r) + (-2r 3 + 9r – 8r 2) in progress 0 Math Savannah 9 hours 2021-09-14T21:50:25+00:00 2021-09-14T21:50:25+00:00 1 Answer 0

## Answers ( )

Answer:7r³ – 3r² + 20r

Step-by-step explanation:(9r³ + 5r² + 11r) + (-2r³ + 9r – 8r²)

You can get rid of the parentheses since there is nothing to distribute.

9r³ + 5r² + 11r – 2r³ + 9r – 8r²

Combine like factors.

7r³ – 3r² + 20r