SOLUTION: Use Descartes' rule of signs to describe the roots of: h(x)=4x^4-5x^3+2x^2-x+5

SOLUTION: Use Descartes' rule of signs to describe the roots of: h(x)=4x^4-5x^3+2x^2-x+5

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Question 1010524: Use Descartes' rule of signs to describe the roots of:
h(x)=4x^4-5x^3+2x^2-x+5
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
h(x)=4x^4-5x^3+2x^2-x+5
There are 4 sign changes, so 4,2,0 positive roots.
h(-x)=+/++/+/+ There are no negative roots.

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