Write a polynomial when given a complex and real root

Write a polynomial when given a complex and real root

Assessment

Interactive Video

Mathematics, Life Skills

11th Grade - University

Hard

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The video tutorial explains how to find a polynomial of degree three given its zeros, including complex zeros. It covers the importance of including conjugates for complex zeros and demonstrates how to convert zeros into factors. The tutorial further explains the multiplication of complex factors using the difference of squares and simplifies the polynomial expression using the FOIL method. The final polynomial is derived with the given zeros.

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7 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the significance of including the conjugate when dealing with complex zeros?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the relationship between zeros, factors, and polynomials?

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

How do you express the zeros of a polynomial in terms of factors?

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the result of multiplying the factors (X - (1 - i)) and (X - (1 + i))?

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

Explain how the difference of squares is used in the multiplication of complex factors.

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6.

OPEN ENDED QUESTION

3 mins • 1 pt

How does the FOIL technique apply when multiplying polynomials?

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7.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the polynomial of degree three derived from the zeros 1 + i and -10?

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