Writing the equation of a polynomial given a complex root

Writing the equation of a polynomial given a complex root

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

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The video tutorial explains how to work with complex zeros and their conjugates in polynomials. It begins by introducing the concept of complex zeros and the importance of considering their conjugates. The tutorial then demonstrates how to set these zeros to X values and apply the zero product property to find polynomials. The difference of two squares method is explained as a way to simplify multiplication. The session concludes with forming and simplifying polynomials, emphasizing the process of working backwards from given zeros.

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5 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the significance of complex conjugates when given a complex zero?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

Explain how to find the polynomial from given zeros using the zero product property.

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

How do the terms in the polynomial relate to the zeros of the function?

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

Describe the process of multiplying two binomials that are conjugates of each other.

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the final polynomial when multiplying the zeros X - 3i and X + 3i?

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