anonymous
  • anonymous
how to find the roots of x^3-2x^2-5x+6
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
using factorization
anonymous
  • anonymous
don't know how to factorize it cuz of the x^3
anonymous
  • anonymous
take cone x common out of three

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More answers

anonymous
  • anonymous
take one x common out of three
anonymous
  • anonymous
you cant as there is a 6 there
anonymous
  • anonymous
6 remains a side zause u are only taking x common.
anonymous
  • anonymous
lol still confused. I wouldn't know how to do it
anonymous
  • anonymous
u know the answer??
anonymous
  • anonymous
???
anonymous
  • anonymous
nope "/
anonymous
  • anonymous
I do but my mate used trial and improvement, and that takes too much time.
RadEn
  • RadEn
if u add up all coeffisients, will giving us :
RadEn
  • RadEn
|dw:1370183595724:dw|
RadEn
  • RadEn
it means one of its factor is (x-1), in other words x=1 is one of the solution of that polinom to get the other roots, use the synthetic division
RadEn
  • RadEn
|dw:1370183873743:dw|
RadEn
  • RadEn
now solve for x : x^2 - x - 6 = 0
RadEn
  • RadEn
looks it is can be factored : x^2 - x - 6 = 0 (x+2)(x-3) = 0 take x+2 = 0, solve for x also x-3 = 0 , solve for x get ur answer
anonymous
  • anonymous
wow that's long. I don't get the synthetic division
RadEn
  • RadEn
use long division
anonymous
  • anonymous
ohh okay I get it now. Thank you!!! :D
RadEn
  • RadEn
wlcm :)
anonymous
  • anonymous
ohh man thnks for remenbering me the synthtic division.

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