Find the sum and choose the correct answer. 2n 3 + 4n 2 – 7 and -n 3 – 8n – 2 n3 + 4 n2 – 8 n – 9 n3 – 4 n2 -9

Question

Find the sum and choose the correct answer.

2n 3 + 4n 2 – 7 and -n 3 – 8n – 2

n3 + 4 n2 – 8 n – 9
n3 – 4 n2 -9
– n3 + 4 n2 – 8 n – 9
n3 + 4 n2 – 8 n – 5

in progress 0
Madeline 2 weeks 2021-09-14T23:42:27+00:00 2 Answers 0

Answers ( )

    0
    2021-09-14T23:43:30+00:00

    Answer:

    Step-by-step explanation:

    2n³ + 4n² – 7 + ( -n³ -8n -2) =2n³ + 4n² – 7 – n³ -8n -2

    =2n³ – n³ + 4n² – 7 -2 – 8n

    = + 4n²  – 8n – 9

    0
    2021-09-14T23:43:32+00:00

    Answer:

    n3 + 4 n2 + 8 n – 16

    Step-by-step explanation:

    you just have to combine like terms. give me a brainliest?

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