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katieb

  • 5 years ago

What is the partial fraction decomposition? 8x^2+20x+77/x(x-9)(x-8)

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  1. anonymous
    • 5 years ago
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    start like this: a/x+b/(x-9)+c/(x-8)

  2. KatieB
    • 5 years ago
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    I also need a, b, and c. :( Please help.

  3. anonymous
    • 5 years ago
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    to get a b and c you need to consider the common denominator. a will be a(x(x-9)), b(x(x-8)) and so on.

  4. anonymous
    • 5 years ago
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    when you get a common denominator multiply the three terms in the numerator out and separate them into coefficients of x^2, x, and the constant, then look at the numerator of the original equation.

  5. KatieB
    • 5 years ago
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    So which would be the answer? haha ;)

  6. anonymous
    • 5 years ago
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    im posting a picture of it, give me a min.

  7. KatieB
    • 5 years ago
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    thank you!

  8. anonymous
    • 5 years ago
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  9. KatieB
    • 5 years ago
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    I think the answer is supposed to be a couple of fractions?...I'm confused.

  10. anonymous
    • 5 years ago
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    Yes, the answer is three fractions. The answer is the same equation written differently.

  11. KatieB
    • 5 years ago
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    Is there any way you could please type out the final answer?

  12. anonymous
    • 5 years ago
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    -749/(8 (x-8))+77/(72 x)+905/(9 (x-9))

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