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anonymous

  • one year ago

quadratic formula x^2-10+22=-2

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    where did i go wrong?

  3. Vocaloid
    • one year ago
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    you have to add 2 to both sides to make the right side = 0 x^2-10+22=-2 x^2-10+22+2=-2+2 x^2-10+24=0 THEN you can use the formula like you did :)

  4. Vocaloid
    • one year ago
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    a = 1, b = -10, c = 24, and you can do the rest from there, correct?

  5. anonymous
    • one year ago
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    oh so for all the quadratic equations u even it out?

  6. Vocaloid
    • one year ago
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    yup, you've got to make sure that ax^2 + bx + c = 0 first

  7. anonymous
    • one year ago
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    but for this one its already 0 so where did i go wrong?

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  8. Vocaloid
    • one year ago
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    look at the b^2 part you found that b = 8, but you forgot to square it b^2 = 64

  9. anonymous
    • one year ago
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    so would it be

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  10. anonymous
    • one year ago
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    cuz u cant have a - square rroot

  11. Vocaloid
    • one year ago
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    hold on a sec, let me draw it out

  12. Vocaloid
    • one year ago
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    |dw:1435107187000:dw|

  13. anonymous
    • one year ago
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    ok wait howd u get 64

  14. Vocaloid
    • one year ago
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    |dw:1435107380073:dw|

  15. Vocaloid
    • one year ago
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    b=8, b^2 = 64

  16. anonymous
    • one year ago
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    so b^2 =64 and thats how u get it and add it to the equation

  17. Vocaloid
    • one year ago
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    yup!

  18. anonymous
    • one year ago
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    ok im going to do it again can u then check it ?

  19. Vocaloid
    • one year ago
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    sure

  20. anonymous
    • one year ago
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    ok wait sorry i got sided tracked

  21. Vocaloid
    • one year ago
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    going to sleep soon, hopefully someone else can help? maybe try tagging someone

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