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toadytica305
 3 years ago
List all the real and imaginary zeros of f(x) = x^3+x^2+ 13x  15... 1 is a zero of the function
toadytica305
 3 years ago
List all the real and imaginary zeros of f(x) = x^3+x^2+ 13x  15... 1 is a zero of the function

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satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0all possible rational roost are number of the form \(\frac{p}{q}\) where \(p\) divides the constant ( in your case 15) and \(q\) divides the leading coefficient, in your case 1

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0so the possibilites are \[\pm1,\pm3,\pm5,\pm15\]

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0since you know 1 is a zero, you can factor it as \[(x1)(\text{something})\] and you can find the something by dividing, by synthetic division or by thinking

toadytica305
 3 years ago
Best ResponseYou've already chosen the best response.0and to find all real and imaginary zeros

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0in this case you get \[(x1) (x^2+2 x+15)\] and the second part you can find the zeros using the quadratic formula they are complex
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