SOLUTION: How many negative real zeros does the function f(x) = x5 + x4 – x2 – x + 1 have?

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Question 330776: How many negative real zeros does the function f(x) = x5 + x4 – x2 – x + 1 have?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
graph%28300%2C300%2C-10%2C10%2C-10%2C10%2Cx%5E5%2Bx%5E4-x%5E2-x%2B1%29
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One real negative root and 4 complex roots.