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anonymous

  • 5 years ago

solve with a quadratic equation. the product of two consecutive odd integers is 2, 115. Find the integers.

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  1. anonymous
    • 5 years ago
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    x + x+1= 2,115, solve for x ^_^ consecutive integers are : x, x+1, x+2, x+3 etc

  2. anonymous
    • 5 years ago
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    wait, is it x? or x+1 as a starting point lol @_@

  3. amistre64
    • 5 years ago
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    ax^2 + bx + c = 2 a(x+2)^2 + b(x+2) + c = 115

  4. amistre64
    • 5 years ago
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    what do the 2 and 115 mean? that (x)(x+2) = 2 and 115?

  5. anonymous
    • 5 years ago
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    im not sure, it just puts 2, 115 :-/

  6. amistre64
    • 5 years ago
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    or the (2+n)(2+(n+2)) = 115?

  7. amistre64
    • 5 years ago
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    a(2^2) + b(2) + c = 115 is what I think it means

  8. amistre64
    • 5 years ago
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    when x=2; y=115

  9. amistre64
    • 5 years ago
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    just cant seem to make sense of the question.. :)

  10. anonymous
    • 5 years ago
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    ah, well, maybe I'll just wait until monday and ask my teacher about it :P thanks for trying to help tho!

  11. amistre64
    • 5 years ago
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    youre welcome :) wish I coulda helped out more tho ;)

  12. anonymous
    • 5 years ago
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    i guess it must be product of two odd integers is 115

  13. amistre64
    • 5 years ago
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    just for kicks, let me try this... (2+n)(2+(n+2)) = 115 (2+n)(4+n) = 115 n^2 +6n +8 = 115 n^2 +6n -107 = 0 n= -6/2 +- sqrt(36 + 428)/2 n = -3 +- sqrt(464)/2 ; but that doesnt pruduce 2 consecutive odd integers for me...

  14. amistre64
    • 5 years ago
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    n(n+2) = 115 n^2 +2n = 115 n^2 +2n -115 = 0 n= -4/2 +- sqrt(4 + 230)/2 n = -2 +- sqrt(234)/2...which isnt 2/2 so that busts as well.....

  15. anonymous
    • 5 years ago
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    yea i tried ...same result

  16. anonymous
    • 5 years ago
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    there is something missing

  17. amistre64
    • 5 years ago
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    2,115 seems like a pair of coordinates.... but that doesnt make sense to me either...

  18. amistre64
    • 5 years ago
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    does f(2) = 115? and f(-2)=115? but then where doe we get the two consecutive number to play into it?

  19. amistre64
    • 5 years ago
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    if anything the 2 roots would multiply to get a number; but it aint 115..and it aint 2 that I can see

  20. anonymous
    • 5 years ago
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    did u try......product=2115???

  21. amistre64
    • 5 years ago
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    no, but then again I didnt try product = 47 either :)

  22. anonymous
    • 5 years ago
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    y 47?

  23. amistre64
    • 5 years ago
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    lol..... why 2115?

  24. anonymous
    • 5 years ago
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    like some ppl write 2115 as 2,115 :)

  25. anonymous
    • 5 years ago
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    i wasnt making a fun of u :)

  26. amistre64
    • 5 years ago
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    ahhhh!! damn yankees lol

  27. anonymous
    • 5 years ago
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    (n-47)(n+45)=0

  28. anonymous
    • 5 years ago
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    awwwwwww

  29. anonymous
    • 5 years ago
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    wrong :(

  30. amistre64
    • 5 years ago
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    (n)(n+2) = 2115 n^2 +2n -2115 = 0 n = -4/2 +- sqrt(4 + 8460)/2 n= -2 +- sqrt(8464)/2....

  31. anonymous
    • 5 years ago
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    hmmmm

  32. amistre64
    • 5 years ago
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    n = -2 +- 92/2

  33. amistre64
    • 5 years ago
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    its either 2 negs or 2 pos to get 2115 right?

  34. anonymous
    • 5 years ago
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    n^2+2n-2115=0 (n+47)(n-45)=0

  35. anonymous
    • 5 years ago
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    n=47 47+2=49

  36. anonymous
    • 5 years ago
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    yes right

  37. amistre64
    • 5 years ago
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    47(49)=2303

  38. anonymous
    • 5 years ago
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    yes :(

  39. amistre64
    • 5 years ago
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    its just a broken question ;)

  40. anonymous
    • 5 years ago
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    :D

  41. anonymous
    • 5 years ago
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    but where is the real prob??when the factorization is correct

  42. anonymous
    • 5 years ago
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    oh 45 and 47 is the right choice

  43. anonymous
    • 5 years ago
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    likewise -45 and -47

  44. anonymous
    • 5 years ago
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    so product =2115 is the actual problem :)

  45. amistre64
    • 5 years ago
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    45 and 47 produce 2115; yes :)

  46. anonymous
    • 5 years ago
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    m so bad in calculations :P

  47. anonymous
    • 5 years ago
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    so it was just a wrong (,) there :P

  48. amistre64
    • 5 years ago
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    you did good :)

  49. anonymous
    • 5 years ago
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    so starlit u dont need to wait for monday...the solution is there for u

  50. anonymous
    • 5 years ago
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    nooooo, factoriztion was correct,but.........

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