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How do I find Descartes rule of signs for positive, negative and nonreal complex zeros?
How do I find Descartes rule of signs for positive, negative and nonreal complex zeros for the polynomial -6x^4+9x^3-5x^2+7x-11?
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- 6 years agoFavorite Answer
descartes rule says that there is at least as many roots as there are sign changes. so here there could be 4 roots (there are in fact four complex roots).
-6 +9 -5 + 7
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