Use Descartes' Rule of Signs to Determine the Possible Number

question 21

Multiple Choice

Use Descartes' Rule of Signs to determine the possible number of positive and negative zeros of f(x) = 6x³ - 5x² + 6x - 6.

• A)3 positive reals or 1 positive real;3 negative reals or 1 negative real
• B)no positive reals;no negative reals
• C)3 positive reals or 1 positive real;1 negative real
• D)1 positive real;3 negative reals or 1 negative real
• E)3 positive reals or 1 positive real;no negative reals

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