Inactive Tutor answered 09/06/15
Tutor
New to Wyzant
Using the Rational Root Theorem and Synthetic Substitution, the function does not have any rational zeros. According to WolframAlpha (http://www.wolframalpha.com/input/?i=2x%5E5-3x%5E2%2Bx-1), the function has four complex roots and one irrational.