Ok here is the problem

9x^3 - 7x^2 + 4x^2 - x + 4x^3 - 3x^2

I got 13x^3-6a-x

but the answer is 13x^3-x

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- Aug 8th 2011, 10:03 PMqueequeegWhere did I go wrong?
Ok here is the problem

9x^3 - 7x^2 + 4x^2 - x + 4x^3 - 3x^2

I got 13x^3-6a-x

but the answer is 13x^3-x - Aug 8th 2011, 10:13 PMearbothRe: Where did I go wrong?
- Aug 9th 2011, 08:52 AMqueequeegRe: Where did I go wrong?
Sorry im sorry the 6a was just 6x^2

My answer still is 13x^3-6x^2-x

but it reads on the book 13x^3-x

And i said the same thing about it would have to be + 3x^2 for the answer to be 13x^3-x

Well my class is tommorrow so i am going to tell this to my teacher. - Aug 9th 2011, 08:59 AMSironRe: Where did I go wrong?
If you've $\displaystyle 9x^3 - 7x^2 + 4x^2 - x + 4x^3 - 3x^2$ then $\displaystyle 13x^3-6x^2-x$ is fine.