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# C4 polynomials watch

1. Hi I have attempted question 5 and also rechecked my work but I can't figure out where I've gone wrong. My answer is 278/27 but the book says 270/8

I have attached my working out

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2. My working out

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3. (Original post by the_googly)
My working out

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You are correct: 278/27.
4. (Original post by Smaug123)
You are correct: 278/27.
Cool so the book is wrong
5. (Original post by the_googly)
Cool so the book is wrong
So it would appear.
6. Hi on question 4b I'm stuck on integrating x/x+1 (which I end up with in working out). Please help

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7. The question

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8. (Original post by the_googly)
Hi on question 4b I'm stuck on integrating x/x+1 (which I end up with in working out). Please help

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9. You'd actually have been better advised to use the correct form of partial fractions (or perform the FULL division) at outset.

10. (Original post by Mr M)
You'd actually have been better advised to use the correct form of partial fractions (or perform the division) at outset.

I have not seen anything like the above in my book
11. (Original post by the_googly)
I have not seen anything like the above in my book
Possibly not but you certainly know how to divide a quadratic by a linear term.

The form I provided is correct as the quotient must be linear.
12. That's what I've been given in the book. From My understanding when the fraction is in proper you use polynomial long division?

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13. (Original post by the_googly)
That's what I've been given in the book. From My understanding when the fraction is in proper you use polynomial long division?

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Improper.

Yes that's what I just did.

Edit: You do realise you didn't complete your long division?
14. (Original post by Mr M)
Improper.

Yes that's what I just did.
Didn't I do that?
15. (Original post by Mr M)
Improper.

Yes that's what I just did.

Edit: You do realise you didn't complete your long division?
No I don't lol
16. (Original post by the_googly)
Didn't I do that?
No you didn't complete the division. You left yourself with another improper fraction.

x/(x+1) is improper because the numerator is not of lower degree than the denominator.

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18. (Original post by the_googly)

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Nope.

19. (Original post by Mr M)
Nope.

Ok thanks.
20. Also struggling on question 3A lol

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