Understanding Polynomial Zeros

The video tutorial explains how to find all zeros of a degree five polynomial, given one zero as +3i. It covers the concept of complex zeros occurring in conjugate pairs and the process of identifying real rational zeros through graph analysis. The tutorial demonstrates using synthetic division to find polynomial factors and solve for remaining zeros. It concludes by emphasizing the connection between polynomial zeros and factors, and the importance of graph interpretation.

What is the total number of complex zeros for a degree five polynomial?

• Four

• Three

• Six

• Five

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CCSS.HSN.CN.C.9

If one zero of a polynomial is 3i, what is another zero?

• -3i

• 3

• 0

• -3

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CCSS.HSF-IF.C.7C

How can we determine the real rational zeros of a polynomial function?

• By analyzing the graph

• By listing all possible factors

• By using a calculator

• By guessing

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CCSS.HSF-IF.C.7C

What does an x-intercept on the graph of a polynomial function represent?

• A complex zero

• A maximum point

• A minimum point

• A real zero

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CCSS.HSF-IF.C.7C

What does having a zero of a polynomial tell us about its factors?

• It has no factors

• It has a linear factor

• It has a quadratic factor

• It has a cubic factor

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CCSS.HSA.APR.D.6

Which method is used to divide a polynomial by its linear factors?

• Graphical method

• Trial and error

• Long division

• Synthetic division

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CCSS.HSA.APR.D.6

Why is synthetic division preferred for real rational zeros?

• It's more accurate

• It's faster

• It's easier

• It's more visual

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CCSS.HSA.APR.D.6

What is the result of dividing a polynomial by a linear factor three times?

• A degree four factor

• A degree three factor

• A degree two factor

• A degree one factor

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CCSS.HSF-IF.C.7C

How do you find the remaining zeros of a degree two factor?

• By guessing

• By factoring

• By graphing

• By using the quadratic formula

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CCSS.HSF-IF.C.7C

What is the relationship between zeros and factors of a polynomial?

• They are inversely related

• Factors determine zeros

• Zeros determine factors

• They are unrelated

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CCSS.HSF-IF.C.7C