is1841969p294u5 is1841969p294u5
  • 21-02-2018
  • Mathematics
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Factor completely 3x2-9x-12

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Banabanana
Banabanana Banabanana
  • 21-02-2018
3x² - 9x - 12 =
3(x
² - 3x - 4) =
3(x
² + x - 4x - 4) =
3(x(x+1)-4(x+1)) =
3(x+1)(x-4) 
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