Question

Find the sum and express it in simplest form (5n^3+7n+2)+(-n^3-6n+5)

Answer 1

`\boxed{\bold{4n^3+n+7}}`

Step By Step Explanation:

Remove Parenthesis: (a) = a

`\bold{5n^3+7n+2-n^3-6n+5}`

Group Like Terms

`\bold{5n^3-n^3+7n-6n+2+5}`

Combine Similar Elements:
`\bold{7n-6n=n}`

`\bold{5n^3-n^3+n+2+5}`

Combine Similar Elements:
`\bold{5n^3-n^3=4n^3}`

`\bold{4n^3+n+2+5}`

Add:
`\bold{2+5=7}`

`\bold{4n^3+n+7}`

➤
`\boxed{\bold{Mordancy}}`

Answer 2

4n^3 +n +7

Explanation:

(5n^3+7n+2)+(-n^3-6n+5)

I like to line them up vertically

5n^3+7n+2

-n^3 -6n+5

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4n^3 +n +7