Use Descartes' Rule of Signs to Determine the Possible Number

question 31

Multiple Choice

Use Descartes' Rule of Signs to determine the possible number of positive and negative zeros of f(x) = x⁵ + 2x.

• A)1 positive real;3 negative reals or 1 negative real
• B)no positive reals;no negative reals
• C)1 positive real;5 negative reals or 3 negative reals or 1 negative real
• D)5 positive reals or 3 positive reals or 1 positive real;no negative reals
• E)3 positive reals or 1 positive real;3 negative reals or 1 negative real

---

Definitions:

Preterm Babies

are infants born before 37 weeks of pregnancy have been completed, often requiring specialized care due to their underdeveloped bodies and organs.

Breathing

The process of inhaling and exhaling air to facilitate gas exchange within the lungs.

Milk Production

is the biological process by which mammals produce milk to feed their young, involving hormonal regulation and nutrient supply.

Prolactin

A hormone produced by the pituitary gland, primarily associated with lactation (milk production) in mammals.