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) = -8x4 + 5x3 - 2x2 + 4x - 7
A. 0 or 2 positive; 0, 2, or 4 negative
B. 0, 2, or 4 positive; 0, 2, or 4 negative
C. 0, 2, or 4 positive; 0 negative
D. 0 or 2 positive; 0 or 2 negative
Answer: C
Mathematics
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, 
A. Yes B. No
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A. 
B. 
C. 3
D. 4
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Mathematics