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Mathematics 17 Online
OpenStudy (anonymous):

What are the possible numbers of positive, negative, and complex zeros of f(x) = -3x4 + 5x3 - x2 + 8x + 4

OpenStudy (matlee):

Positive: 4 or 2 or 0; Negative: 2 or 0; Complex: 4 or 2 or 0

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