Which of the following polynomial functions has the roots 3, -1, 1, 4?   a. P(x)= x4 - x3 + 13x2 - 7x -1 b. P(x) = x4 - 7x3 + 11x2 + 7x c. P(x) = x4 + 7x3 - 11x2 - 7x + 12

Trigonometry (MindTap Course List)
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Chapter4: Complex Numbers
Section4.2: Complex Solutions Of Equations
Problem 7ECP: Find the cubic polynomial function f with real coefficients that has 1 and 2+i as zeros, and f2=2.
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Which of the following polynomial functions has the roots 3, -1, 1, 4?

 

a. P(x)= x4 - x3 + 13x2 - 7x -1

b. P(x) = x4 - 7x3 + 11x2 + 7x

c. P(x) = x4 + 7x3 - 11x2 - 7x + 12

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