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Use Descartes' Rule of Signs to Determine the Possible Number f(x)=6x48x37x28x+3f ( x ) = - 6 x ^ { 4 } - 8 x ^ { 3 } - 7 x ^ { 2 } - 8 x + 3

Question 386

Multiple Choice

Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative
real zeros for the function.
- f(x) =6x48x37x28x+3f ( x ) = - 6 x ^ { 4 } - 8 x ^ { 3 } - 7 x ^ { 2 } - 8 x + 3


A)
 Positive  Negative  Nonreal Complex 220202022002\begin{array}{c|c|c}\text { Positive } & \text { Negative } & \text { Nonreal Complex } \\\hline 2 & 2 & 0 \\2 & 0 & 2 \\0 & 2 & 2 \\0 & 0 & 2\end{array}

B)
 Positive  Negative  Nonreal Complex 112\begin{array}{c|c|c}\text { Positive } & \text { Negative } & \text { Nonreal Complex } \\\hline 1 & 1 & 2\end{array}

C)
 Positive  Negative  Nonreal Complex 121\begin{array}{c|c|c}\text { Positive } & \text { Negative } & \text { Nonreal Complex } \\\hline 1 & 2 & 1\end{array}

D)
 Positive  Negative  Nonreal Complex 130112\begin{array}{c|c|c}\text { Positive } & \text { Negative } & \text { Nonreal Complex } \\\hline 1 & 3 & 0 \\1 & 1 & 2\end{array}


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