anonymous
  • anonymous
need help solving some basic algebra question to the 3rd power!!
Mathematics
katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
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anonymous
  • anonymous
what questions
anonymous
  • anonymous
\[8x ^{3} - 4x ^{2 } - 12x =0\]
anonymous
  • anonymous
how would i break that down?

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precal
  • precal
factor out the GCF
precal
  • precal
I would factor out 4x
anonymous
  • anonymous
your trying to factor the polynomial
precal
  • precal
|dw:1358903207710:dw|
precal
  • precal
|dw:1358903232815:dw|
precal
  • precal
|dw:1358903299195:dw|
precal
  • precal
if you look at your graph, these locations are where the graph crosses the x axis
precal
  • precal
always try to factor equations back into linear or quadratics if that does not work then you have to use synthetic division
precal
  • precal
hope that helps you
anonymous
  • anonymous
nice, it helped me.
anonymous
  • anonymous
wow a bit confusing lol but something is clicking in my brain
precal
  • precal
well remember you are only taught to factor 2nd powers. I factored out 4x because that created the 2nd power
anonymous
  • anonymous
so its factored out then simplfied down?
precal
  • precal
once you factor it, then we have a theorem that states we can set them to zero and solve each one
anonymous
  • anonymous
when the 4x is factored out the 8x 3rd power becomes 2x 2nd power?
anonymous
  • anonymous
was that divided by the 4x? and expondents substracted?
precal
  • precal
not I factored it out|dw:1358903718312:dw|check yourself by distributing it back in

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