Use Descartes' Rule of Signs to Determine the Possible Number $f ( x ) = 3 x ^ { 6 } - 9 x ^ { 5 } + x ^ { 4 } - 1.5 x ^ { 3 } + 18$

question 115

Multiple Choice

Use Descartes' Rule of Signs to determine the possible number of positive and negative real zeros for the polynomial
function.
- $f ( x ) = 3 x ^ { 6 } - 9 x ^ { 5 } + x ^ { 4 } - 1.5 x ^ { 3 } + 18$

• A)4 or 2 or 0 positive zeros, 1 negative zeros
• B)4 or 2 or 0 positive zeros, 0 negative zeros
• C)4 positive zeros, 0 negative zeros
• D)4 or 2 positive zeros, 0 negative zeros

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