superagent1311
superagent1311 superagent1311
  • 25-06-2018
  • Mathematics
contestada

find s cubic function with the given zeros -7 5 -3

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Luv2Teach
Luv2Teach Luv2Teach
  • 06-07-2018
If the zeros are -7, 5, and -3, then the factors are (x+7), (x-5), (x+3).  We have to multiply all those together to get a third degree polynomial.  Multiplying out the first 2, we get [tex](x+7)(x-5)=x^2+2x-35[/tex].  Now we'll multiply in that last factor:  [tex](x^2+2x-35)(x+3)=x^3+5x^2-29x-105[/tex].  There's your third degree polynomial!!
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