AnswersCommon Core Algebra II A-ICWriting Polynomial Functions from Complex Roots

Writing Polynomial Functions from Complex Roots Answers

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A polynomial function, f(x), with rational coefficients has roots of –2 and .The irrational conjugates theorem states that which of the following must also be a root of the function?

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Option A
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The corresponding polynomial function is

A
f(x) = x2 + 5x - 1
B
f(x) = x2 + 4x - 5
C
f(x) = x2 + 5x - 5
D
f(x) = x2 - 4x - 5

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Writing Polynomial Functions from Complex Roots…