4 years ago

Find the sum and choose the correct answer.

1 answer:

7 0

To put it in the simplest words :
Get rid of the parentheses and add like so:
$2n^3 - 8n^2 + 7 + n^3 + 8n - 9
$
<span>Combine like terms
2n^3+n^3= 3n^3
-8n^2 remains the same since there are no like terms for it
8n also remains the same
-9+7=-2
Put all of the numbers together
3n^3-8n^2+8n-2
Final answer:
B - the 2nd one</span>

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astraxan [27]

Answer:

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Step-by-step explanation:

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Sonja [21]

$\bf \textit{volume of a sphere}\\\\
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\begin{cases}
r=radius\\
------\\
r=4
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-------------------------------\\\\
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