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ihatealgebrasomuch

solve the quadratic equation by factoring-> x^2+9x-36=0... can someone do this, and give me step by step instructions please!! thax so much!1 xxx

  • one year ago
  • one year ago

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  1. barrycarter
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    You're trying to put the equation in the form (x-something)*(x-somethingelse)=0 -- does that help?

    • one year ago
  2. ihatealgebrasomuch
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    not really, i havent done this in so long...

    • one year ago
  3. barrycarter
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    Well, if you had to guess at numbers for the two somethings, what would they be? Just take a wild guess at first

    • one year ago
  4. qpHalcy0n
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    What are two numbers that multiply to give 36, but either add or subtract to give 9.

    • one year ago
  5. ihatealgebrasomuch
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    12 and -3?

    • one year ago
  6. qpHalcy0n
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    Yep. (x+12)(x-3)

    • one year ago
  7. qpHalcy0n
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    You can check by FOIL'ing it out.

    • one year ago
  8. ihatealgebrasomuch
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    thanks so much!

    • one year ago
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