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Naya [18.7K]
2 years ago
9

5. (9r 3 + 5r 2 + 11r) + (-2r 3 + 9r - 8r 2)

Mathematics
1 answer:
ad-work [718]2 years ago
3 0

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

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olga_2 [115]

Answer:

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Step-by-step explanation:

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2 years ago
PLEASE MATH HELP 20 points PLEASE!!!!
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It would be written as :
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Two decimal point :

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