asked on # 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!

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

7n^2 + 2n + 6 - 3 doesn't have any like terms

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Wouldn't combining "like terms" be similar to?

2y + 5y = 7y

or 8 - 5 = 3

or x^2 * x^3 = x^5

2y + 5y = 7y

or 8 - 5 = 3

or x^2 * x^3 = x^5

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

thanks!

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?

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?

can you combine anything in any of those expressions?