hlang4d
hlang4d hlang4d
  • 23-02-2017
  • Mathematics
contestada

How do I find the zeros of a polynomial?

The equation: y= (x+5)(-2x^3-5x^2)

Respuesta :

luciamaria
luciamaria luciamaria
  • 27-02-2017
your first zero is -5 (you get this from looking at x+5) then you can just punch it into your graphing calculator and it'll give you the two other zeros: -2/5 and 0
the reason you get these two zeros is because -2x^3-5x^2 turns into 2/5x^3 -x^2
the x^2 is of multiplicity 2 so it'll 'bounce' off the graph at 0 like in the photo I've included
Ver imagen luciamaria
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