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BMI229

  • one year ago

Solve. 3x2 = –21x – 15

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  1. Hope_nicole
    • one year ago
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    get it into the form of ax^2+bx+c and then you can factor it :D

  2. gorv
    • one year ago
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    take 3 common x2+7x+5=0 solution x=(-7+(29)^1/2)/2 x=(-7-(29)^1/2)/2

  3. BMI229
    • one year ago
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    Dont get it help please

  4. gorv
    • one year ago
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    apply the formula for calculation of root of quadratic equation

  5. Hope_nicole
    • one year ago
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    okay, so first we should get everything on the same side so its =0. so to do that we would subtract 3x^2 to get -3x^2-21x-15, now personally i dont like working with negatives so if you multiply it all by -1 you will get 0=3x^2+21x+15, does that make sense?

  6. BMI229
    • one year ago
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    thanks I got it but can you stick around I have a couple more problems that I need help with?

  7. gorv
    • one year ago
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    telll mate :)

  8. Hope_nicole
    • one year ago
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    sure :D sorry OpenStudy was lagging really bad on my computer

  9. BMI229
    • one year ago
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    its fine thanks

  10. Morgan_pierce
    • one year ago
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    can you please put this in the form?

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