What does the Rational Root Theorem and Descartes' Rule of Signs indicate about the zeros of a polynomial function?

"Descartes' rule of sign is used to determine the number of real zeros of a polynomial function. It tells us that the number of positive real zeroes in a polynomial function f(x) is the same or less than by an even numbers as the number of changes in the sign of the coefficients."

Explanation:

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b

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a

Step-by-step explanation: