anonymous
  • anonymous
Help!! Im a little stuck.. I need to decompose this into partial fractions:
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
\[(2x^2-11x+5)/(x-3)(x^2+x-4)\]
Hero
  • Hero
What course are you currently taking?
anonymous
  • anonymous
This is Pre-Calc Hero

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Hero
  • Hero
Okay, just wondering.
anonymous
  • anonymous
Then I use A/(x-3)+B(x^2+x-4)
Hero
  • Hero
What textbook are you using for the course?
anonymous
  • anonymous
Precalculus: Graphs and Models by Addison Wesley
Hero
  • Hero
Thanks
anonymous
  • anonymous
Its pretty old. 1997
Hero
  • Hero
That's okay. Sometimes, old is better.
anonymous
  • anonymous
Okay. I mean its probably all the same techniques, for the most part.
Hero
  • Hero
What edition?
Hero
  • Hero
Well, nevermind. I'll get get the latest edition.
anonymous
  • anonymous
Ok I wasnt sure. I dont know if it says it for sure.
Hero
  • Hero
If you have the book, it will say what edition it is. You just have to look, but okay.
Hero
  • Hero
I have about 9 min left before it finishes downloading
anonymous
  • anonymous
I really dont see it at all :O This is the exact book though http://www.abebooks.com/book-search/isbn/0201694425/hard-cover/
anonymous
  • anonymous
Ok thats fine. Thanks
Hero
  • Hero
If you want to show someone a book, use amazon.com
anonymous
  • anonymous
ahh alright.
Hero
  • Hero
Yes, that version is very old. It's not even available for download. It's the first edition apparently
Hero
  • Hero
4 minutes left..
anonymous
  • anonymous
ok
Hero
  • Hero
If you have the book, is there any reason why you are not able to understand this concept?
anonymous
  • anonymous
I get the concepts down sort of, I just end up with the wrong numbers. I either do a step too early or Im not doing it completely right. I just want to make sure I understand it
Hero
  • Hero
Okay, I will have a look here in about 15 secs
anonymous
  • anonymous
Ok Ill go through with what Im doing and you can maybe see what Im doing wrong
anonymous
  • anonymous
Let me know when its done
Hero
  • Hero
It might take me a bit to figure this out.
anonymous
  • anonymous
Ok thats fine!
Hero
  • Hero
Okay, I see something similar to this where it talks about setting up a decomposition template.
anonymous
  • anonymous
Its in a lesson called Partial Fractions in my book
anonymous
  • anonymous
That sounds right though
Hero
  • Hero
\[\frac{2x^2 - 11x+5}{(x-3)(x^2+x-4)} = \frac{A}{x-3} + \frac{Bx + C}{x^2 + x -4}\]
Hero
  • Hero
Maybe that's what you're looking for.
anonymous
  • anonymous
So then its \[A(x^2+x-4)+(x-3)(Bx+C)=2x^2-11x+5\]
Hero
  • Hero
What I posted is in your book so it is correct. If what you posted is the next step, then by all means, go right ahead, but maybe someone else can take a look at that for you.
anonymous
  • anonymous
Ok thats cool. I needed that for sure so thanks a lot Hero

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