anonymous
  • anonymous
How about helping me see the process of factoring -2x^3 - 12x^2 + 30x + 200? Thanks.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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bahrom7893
  • bahrom7893
I would first take the 2 out: 2(-x^3 - 6x^2 + 15x + 100)
bahrom7893
  • bahrom7893
Now, Im lost lol... havent factored by hand in a while... let me see..
bahrom7893
  • bahrom7893
im in diff eqns, we barely factor by hand

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bahrom7893
  • bahrom7893
actually take -2 out..
anonymous
  • anonymous
Did that...now what?
bahrom7893
  • bahrom7893
i think i see a (x+5)^2 somewhere, but not sure yet..
anonymous
  • anonymous
yes...that's part of the answer but how do you know that?
bahrom7893
  • bahrom7893
just doin trial and error, let me figure it out lol..
bahrom7893
  • bahrom7893
If I am right then we need to find an x^2+10x+25 in there..
anonymous
  • anonymous
You are right...the other part of the answer is an (x - 4)...can't see it.
bahrom7893
  • bahrom7893
wait lemme google how to do this, refresh my memory..
bahrom7893
  • bahrom7893
omg i just realized how much i hate cubics... forgot how i got the x+5...
anonymous
  • anonymous
me too
bahrom7893
  • bahrom7893
wait i think i can check somewhere..
bahrom7893
  • bahrom7893
aww wolframalpha is not showing steps..=( when is this due?
anonymous
  • anonymous
Factor by grouping!
bahrom7893
  • bahrom7893
okay ive tried gorupin every danged term..
anonymous
  • anonymous
Oh, then never mind. That was just a wild guess.
bahrom7893
  • bahrom7893
oh lol, i thought i was goin crazy..
anonymous
  • anonymous
I'm a teacher...was going to teach it tomorrow...but I can wait.
anonymous
  • anonymous
I've been trying to figure it out all day.
bahrom7893
  • bahrom7893
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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