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

Question

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

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Savannah 9 hours 2021-09-14T21:50:25+00:00 1 Answer 0

Answers ( )

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    2021-09-14T21:51:36+00:00

    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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45:7+7-4:2-5:5*4+35:2 =? ( )