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anonymous

  • one year ago

How many roots do the following equations have? -12x2 - 25x + 5 + x3 = 0

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  1. egbeach
    • one year ago
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    \[-12x ^{2}-25x+5+x ^{3}\]

  2. egbeach
    • one year ago
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    thats the equation right?

  3. anonymous
    • one year ago
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    It has 2 roots, I'm pretty sure

  4. egbeach
    • one year ago
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    no. you find the number of roots based of the highest exponent. in this equation the highest exponent in 3. thats how many answer or roots you should find.

  5. xapproachesinfinity
    • one year ago
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    third degree polynomials supposedly have 3 roots (according to FTA)

  6. xapproachesinfinity
    • one year ago
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    some roots may be complex or the roots might be all real! we need to check that to see

  7. anonymous
    • one year ago
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    Sorry, I didn't see the 3 at the end. To find the roots, you can use the quadratic formula

  8. xapproachesinfinity
    • one year ago
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    hhmm i don't think there a quadratic formula for a third degree poly in fact, quad mean (2n degree) so even the term does not fit but surely there is a formula for a third degree equations but somewhat complex than the usual quadratic formula for parabolas

  9. xapproachesinfinity
    • one year ago
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    what you can actually do here use the descartes rule of sign to see how many possible roots or actually go and work out the solutions using rational theorem

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