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Tia_Sweetheart17

  • 4 years ago

this is a quadratic equation. i know the formula i just need to know how to do it. x^2+2x-24=0

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  1. gandalfwiz
    • 4 years ago
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    Do you know how to find your A, your B, any your C?

  2. Tia_Sweetheart17
    • 4 years ago
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    yeah

  3. gandalfwiz
    • 4 years ago
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    Wait- just re read the question. You're looking to use the quadratic formula, right?

  4. Tia_Sweetheart17
    • 4 years ago
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    yes

  5. gandalfwiz
    • 4 years ago
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    Okay, good. So your a is 1, your b is 2, and your c is -24 so wherever you see an a in the formula, you put a 1, 2 for the b, and -24 for the c

  6. gandalfwiz
    • 4 years ago
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    So, the formula starts with (-b)^2. For that b, you'd put in 2. Do the same with the rest of the a's,b's, and c's and then just solve for x

  7. gandalfwiz
    • 4 years ago
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    Is that good or do you want to do the process together?

  8. Tia_Sweetheart17
    • 4 years ago
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    could we do it together to make sure i'm doing it right?

  9. gandalfwiz
    • 4 years ago
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    sure!

  10. gandalfwiz
    • 4 years ago
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    Alright, to heck with the stupid equation. I'm drawing it

  11. gandalfwiz
    • 4 years ago
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    |dw:1331687946988:dw|

  12. gandalfwiz
    • 4 years ago
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    Okay, so lets do the a's first

  13. gandalfwiz
    • 4 years ago
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    Since your a is 1, that's really simple because it only ever needs to get multiplied by the 2, and 2*1=1. So for a, you don't need to make any changes

  14. gandalfwiz
    • 4 years ago
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    Lets to b next. |dw:1331688080301:dw|

  15. gandalfwiz
    • 4 years ago
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    Sorry about that extra a; I forgot to mention it when we did a but it's the same situation. Because a is 1 and it's being multiplied, it makes no difference

  16. gandalfwiz
    • 4 years ago
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    Any questions so far?

  17. Tia_Sweetheart17
    • 4 years ago
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    no

  18. gandalfwiz
    • 4 years ago
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    Okay :) Now lets do c.|dw:1331688316770:dw|

  19. gandalfwiz
    • 4 years ago
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    And all of that is equal to x Now we need to solve for x

  20. gandalfwiz
    • 4 years ago
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    |dw:1331688455475:dw|

  21. gandalfwiz
    • 4 years ago
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    |dw:1331688519484:dw|

  22. gandalfwiz
    • 4 years ago
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    |dw:1331688549330:dw|

  23. gandalfwiz
    • 4 years ago
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    |dw:1331688578241:dw|

  24. gandalfwiz
    • 4 years ago
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    |dw:1331688607188:dw|

  25. gandalfwiz
    • 4 years ago
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    And that's all there is :)

  26. Tia_Sweetheart17
    • 4 years ago
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    thank you so much. i think i got it.

  27. gandalfwiz
    • 4 years ago
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    You're welcome :) medal?

  28. Tia_Sweetheart17
    • 4 years ago
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    sure

  29. gandalfwiz
    • 4 years ago
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    :)

  30. Tia_Sweetheart17
    • 4 years ago
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    could you help me again?

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