Question 834301
{{{-3(x^3+4x^2+x-6)}}}


Check for possible roots 1, 2, 3, 6, -1, -2, -3, -6 with Rational Roots Theorem.  The resulting binomial factors tell the x intercepts.  They cut the horizontal axis into intervals which you can check for the f(x) as positive or negative. 


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