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# Expressions and like terms

Which expression is the same as 9n+ 3 after combining like terms? :

1. 10n^2 - n^2 - 3
2. 3n +7 - 4 + 3n
3. 18 - 15 + 4n + 5n
4. 7n^2 + 2n + 6 - 3
Please help!
Math / Science

Last Comment
awking00

8/22/2022 - Mon
ozo

do you see like terms in any of those expressions?
can you combine anything in any of those expressions?
naseeam

ASKER
7n^2 + 2n + 6 - 3 doesn't have any like terms
ASKER CERTIFIED SOLUTION
ozo

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awking00

Wouldn't combining "like terms" be similar to?
2y + 5y = 7y
or 8 - 5 = 3
or x^2 * x^3 = x^5
ozo

I might call the last combining like factors rather than combining like terms, but yes.
naseeam

ASKER
thanks!
awking00

ozo,
I agree with your terminology, which is why I put "like terms" in quotes just to match the way the question was worded.

naseeam,
So what was your final answer?