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eli123 Group Title

i really need some help

  • one year ago
  • one year ago

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  1. hartnn Group Title
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    on which topic ?

    • one year ago
  2. eli123 Group Title
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    quadratic equations

    • one year ago
  3. eli123 Group Title
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    • one year ago
  4. hartnn Group Title
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    yes, i can help. post your question.

    • one year ago
  5. eli123 Group Title
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    i did up to 55sqrtof -55^2-4(24)(-24) all over 48

    • one year ago
  6. eli123 Group Title
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    which is 55 + or - sqrt of 721 all over 48

    • one year ago
  7. eli123 Group Title
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    then i got stuck, i know i have to factor right?

    • one year ago
  8. hartnn Group Title
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    u have used quadratic formula to find roots, when it was asked to factor. if u only want an answer it doesn't matter what u use , factoring or formula...so do u want an answer or do u want to learn factoring?

    • one year ago
  9. eli123 Group Title
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    i want to learn

    • one year ago
  10. hartnn Group Title
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    ok, so u got quadratic equation as 24p^2 -55 p -24 = 0 right ? now tell me 2 numbers whose product is -24*24 = -576 and sum is -55

    • one year ago
  11. eli123 Group Title
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    that's the part that i hate, because it takes so long to find the numbers. there's no easy way to find them? or a trick

    • one year ago
  12. eli123 Group Title
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    -64 and 9

    • one year ago
  13. hartnn Group Title
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    thats correct :) so u write your equation as 24p^2 -64p +9p -24 = 0 ok ? now what can u take out common from 1st 2 terms ??

    • one year ago
  14. eli123 Group Title
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    p?

    • one year ago
  15. hartnn Group Title
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    p and ? what can u take common from 24 and 64 ?

    • one year ago
  16. eli123 Group Title
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    4

    • one year ago
  17. hartnn Group Title
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    nice try .... what about 8 ?

    • one year ago
  18. eli123 Group Title
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    yeah

    • one year ago
  19. eli123 Group Title
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    and then the other one is 3(3p-8)

    • one year ago
  20. hartnn Group Title
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    so u take 8p common 8p(3p-8) + 3 (3p-8) = 0 got this ? yes, other part is correct

    • one year ago
  21. eli123 Group Title
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    which gives you (8p+3)(3p-8)

    • one year ago
  22. hartnn Group Title
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    excellent, u are good at this :)

    • one year ago
  23. eli123 Group Title
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    lol yeah right

    • one year ago
  24. hartnn Group Title
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    so your roots are ?

    • one year ago
  25. hartnn Group Title
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    8p+3 = 0 or 3p-8 = 0 u know what to do next?

    • one year ago
  26. eli123 Group Title
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    ok so -3/8 and 8/3?

    • one year ago
  27. hartnn Group Title
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    exactly :)

    • one year ago
  28. eli123 Group Title
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    thank you!

    • one year ago
  29. hartnn Group Title
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    welcome :) u did most part of the problem...

    • one year ago
  30. eli123 Group Title
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    uh is there something i have to do after that? because it says its wrong

    • one year ago
  31. eli123 Group Title
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    multiply?

    • one year ago
  32. hartnn Group Title
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    did u write it like this ? \(\huge{\frac{-3}{8},\frac{8}{3}}\) no,don't multiply...

    • one year ago
  33. hartnn Group Title
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    @eli123 ,did u get it right ?

    • one year ago
  34. eli123 Group Title
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    i got it :) i had put the negative sign in front of the whole fraction :/ my bad @hartnn

    • one year ago
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