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anonymous

  • 5 years ago

How about helping me see the process of factoring -2x^3 - 12x^2 + 30x + 200? Thanks.

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  1. bahrom7893
    • 5 years ago
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    I would first take the 2 out: 2(-x^3 - 6x^2 + 15x + 100)

  2. bahrom7893
    • 5 years ago
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    Now, Im lost lol... havent factored by hand in a while... let me see..

  3. bahrom7893
    • 5 years ago
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    im in diff eqns, we barely factor by hand

  4. bahrom7893
    • 5 years ago
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    actually take -2 out..

  5. anonymous
    • 5 years ago
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    Did that...now what?

  6. bahrom7893
    • 5 years ago
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    i think i see a (x+5)^2 somewhere, but not sure yet..

  7. anonymous
    • 5 years ago
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    yes...that's part of the answer but how do you know that?

  8. bahrom7893
    • 5 years ago
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    just doin trial and error, let me figure it out lol..

  9. bahrom7893
    • 5 years ago
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    If I am right then we need to find an x^2+10x+25 in there..

  10. anonymous
    • 5 years ago
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    You are right...the other part of the answer is an (x - 4)...can't see it.

  11. bahrom7893
    • 5 years ago
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    wait lemme google how to do this, refresh my memory..

  12. bahrom7893
    • 5 years ago
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    omg i just realized how much i hate cubics... forgot how i got the x+5...

  13. anonymous
    • 5 years ago
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    me too

  14. bahrom7893
    • 5 years ago
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    wait i think i can check somewhere..

  15. bahrom7893
    • 5 years ago
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    aww wolframalpha is not showing steps..=( when is this due?

  16. anonymous
    • 5 years ago
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    Factor by grouping!

  17. bahrom7893
    • 5 years ago
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    okay ive tried gorupin every danged term..

  18. anonymous
    • 5 years ago
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    Oh, then never mind. That was just a wild guess.

  19. bahrom7893
    • 5 years ago
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    oh lol, i thought i was goin crazy..

  20. anonymous
    • 5 years ago
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    I'm a teacher...was going to teach it tomorrow...but I can wait.

  21. anonymous
    • 5 years ago
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    I've been trying to figure it out all day.

  22. bahrom7893
    • 5 years ago
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    LOL really? WOW I am stuck at a similar one for my diff eqns class, gotta solve a cubic equation, even calculator is not helpin..

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