SOLUTION: I need help with this question: find all the zeros of the function x^3+3x^2-x+12. How do I do this?

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Question 86377: I need help with this question: find all the zeros of the function x^3+3x^2-x+12. How do I do this?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
find all the zeros of the function x^3+3x^2-x+12
The rational candidates are +-1,+-2,+-3,+-4,+-6,+-12.
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Use synthetic division or graphing to find the 1st zero.
Graphing I find a zero at x=-3.989362 which leads me to
think you have posted the problem incorrecly.
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Cheers,
Stan H.