SOLUTION: Use Descartes' Rule of Signs to state the number of possible positive and negative real zeros of P(X) = 5X^4 + 21X^3 + 18X^2 - 6X - 4

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Use Descartes' Rule of Signs to state the number of possible positive and negative real zeros of P(X) = 5X^4 + 21X^3 + 18X^2 - 6X - 4      Log On


   

Question 57444This question is from textbook Applied College Algebra
: Use Descartes' Rule of Signs to state the number of possible positive and negative real zeros of P(X) = 5X^4 + 21X^3 + 18X^2 - 6X - 4 This question is from textbook Applied College Algebra

Answer by stanbon(75887) About Me  (Show Source):
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Use Descartes' Rule of Signs to state the number of possible positive and negative real zeros of
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P(X) = 5X^4 + 21X^3 + 18X^2 - 6X - 4
# of changes of sign is one
number of positive roots is one
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P(-x)=5x^4-21x^3+18x^2+6x-4
# of changes of sign is three
number of negative roots is 3
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Cheers,
Stan H.