Use Descartes' Rule of Signs to determine the possible number of positive and negative real zeros for the function. Then, use a graph to determine the actual number of positive and negative real zeros.P(x) = 9x8 + 4x6 + 9x4 + 5x2 + 8
A. possible: 0 pos, 0 neg
actual: 0 pos, 0 neg
B. possible: 1 pos, 1 neg
actual: 1 pos, 1 neg
C. possible: 1 or 3 pos, 1 neg
actual: 1 pos, 1 neg
D. possible: 1 pos, 1 or 3 neg
actual: 1 pos, 1 neg
Answer: A
Mathematics
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