SOLUTION: Subtract the polynomials. 8x^3+x^2+1 from 3x^3-x-6 I've tried it twelve times on webassign and asked on here previously, but the answer I was given was incorrect. I continue

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Subtract the polynomials. 8x^3+x^2+1 from 3x^3-x-6 I've tried it twelve times on webassign and asked on here previously, but the answer I was given was incorrect. I continue      Log On


   

Question 838582: Subtract the polynomials.
8x^3+x^2+1 from 3x^3-x-6
I've tried it twelve times on webassign and asked on here previously, but the answer I was given was incorrect. I continued to try and I'm still not getting it.
This was the answer I was previously given: -5x^3 -x^2 -x - 7.

I've got it down to (subtracting vertically):
3x^3 -x -6
-8x^3 -x^2 -1

Thank you for your help!
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Subtract the polynomials.
8x^3+x^2+1 from 3x^3-x-6

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-

%283x%5E3-x-6%29-%288x%5E3%2Bx%5E2%2B1%29
3x%5E3-x-6-8x%5E3-x%5E2-1
3x%5E3-8x%5E3-x%5E2-x-6-1
highlight%28-5x%5E3-x%5E2-x-7%29