Main content
Course: Algebra 2 > Unit 5
Lesson 2: Positive and negative intervals of polynomials- Positive and negative intervals of polynomials
- Positive & negative intervals of polynomials
- Multiplicity of zeros of polynomials
- Zeros of polynomials (multiplicity)
- Zeros of polynomials (multiplicity)
- Zeros of polynomials & their graphs
- Positive & negative intervals of polynomials
© 2024 Khan AcademyTerms of usePrivacy PolicyCookie Notice
Positive and negative intervals of polynomials
If we know all the zeros of a polynomial, then we can determine the intervals over which the polynomial is positive and negative. This is because the polynomial has the same sign between consecutive zeros. So all we need to do is check each interval that is between two consecutive zeros (or before the smallest zero and after the largest zero).
Want to join the conversation?
No posts yet.