es Descartes Rule of signs say about the number of positive real roots and negative real roots for the polynomial function P(x) = x 3 + 3x 2 + 5x + 1?...

What does Descartes Rule of signs say about the number of positive real roots and negative real roots for the polynomial function P(x) = x3 + 3x2 + 5x + 1?

What are the positive numbers of positive real roots?

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