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sue101 Group Title

Simplify the sum. 7/(a+8) + 7/(a^2 - 64)

  • one year ago
  • one year ago

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  1. ceb105 Group Title
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    Okay so notice that the bottom of the second fraction is infact the "difference of two squares" i.e. (a^2-64)=(x-8)(x+8), then multiply the first fraction by x-8 so that you have equal denominators then you may add them together simply and simplify if nessecary

    • one year ago
  2. ajprincess Group Title
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    What is the lcm of a+8 and a^2-64?

    • one year ago
  3. sue101 Group Title
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    64?

    • one year ago
  4. lacypennelll Group Title
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    You play AnimalJam?

    • one year ago
  5. ajprincess Group Title
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    a+8=1*(a+8) a^2-64=(a+8)(a-8)

    • one year ago
  6. lacypennelll Group Title
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    .-. Thats wha aj stands for

    • one year ago
  7. sue101 Group Title
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    aj??

    • one year ago
  8. lacypennelll Group Title
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    ^ nvm

    • one year ago
  9. sue101 Group Title
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    aj u there?

    • one year ago
  10. ajprincess Group Title
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    yup I am

    • one year ago
  11. sue101 Group Title
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    oh ok so that answer i will is C or D

    • one year ago
  12. sue101 Group Title
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    ??

    • one year ago
  13. lacypennelll Group Title
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    :| Silence

    • one year ago
  14. ajprincess Group Title
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    Lcm of a+8 and a^2-64 is a^2-64 a^2-64=(a-8)(a+8) So the common denominator is a^2-64 With vat expression do u need to multiply (a+8) to make it a^2-64?

    • one year ago
  15. ajprincess Group Title
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    |dw:1359656931020:dw||dw:1359657016517:dw|

    • one year ago
  16. sue101 Group Title
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    I don't have that as a mutilple choice?

    • one year ago
  17. ajprincess Group Title
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    simplify the numerator

    • one year ago
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