Question 891516
{{{x^3+3x^2-5-4=0}}}
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{{{graph(300,300,-3,3,-3,3,x^3+3x^2-5-4)}}}
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According to the rational roots theorem, a rational root would be of -4,-2,-1,1,2, or 4. Since none of these is a root, there is no rational root for this cubic.