[Solution] Use Descartes's Rule of Signs to determine the possible number of positive and negative real zeros of f(x)=3 x^5-2 x^4-2
Question: Use Descartes's Rule of Signs to determine the possible number of positive and negative real zeros of
\[f(x)=3 x^{5}-2 x^{4}-2 x^{2}+x-1\]
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