# Thread: Help with polynomial long division

1. ## Help with polynomial long division

Here is the problem;
(-30+6y^3-28y+y^2) divided by (2y-5)
I have listed it in decending order as follows;
6y^3+y^2 / -28-30
I get 3y^2 and then I'm stuck...
Any help or explanations would be much appreciated.
I need to do this problem using long division and then do the self check.

2. ## Re: I am lost, need help with polynomial long division

Originally Posted by sweetness4
(-30+6y^3-28y+y^2) divided by (2y-5)
I have listed it in decending order as follows;
6y^3+y^2 / -28-30
Your "decending order" makes no sense; should be:
6y^3 + y^2 - 28y - 30

Now you need to divide that by (2y - 5).
We can't "teach" here; go here to learn:
Polynomial Long Division

3. ## Re: I am lost, need help with polynomial long division

Wilmer thank you for the link, I will go look there. I did enter my decending order incorrectly (fraction bar shouldn't have been there). I've looked at about 4 sites so far and am still confused as to what to do with the y^2 when dividing. There have been a few other problems I was able to follow their steps and understand but this problem still has me confused. Thanks again for your help

4. ## Re: I am lost, need help with polynomial long division

Originally Posted by sweetness4
...am still confused as to what to do with the y^2 when dividing.
Not sure what you mean, like WHY the "y^2"
Here's what happens at 1st step:
Code:
         3y^2
------------------------
2y - 5 / 6y^3 +   y^2 - 28y - 30
6y^3 - 15y^2
------------
16y^2 - 28y
See how the y^2 is "handled"? Hope that helps.

5. ## Re: I am lost, need help with polynomial long division

Yes, thats what I was asking. I'm understanding now. Thanks alot it was a big help