Find a polynomial function of lowest degree with rational coefficients that has the given numbers as some of its zeros.2 + i, 4
A. f(x) = x3 + 8x2 + 21x + 20
B. f(x) = x3 + 9x2 + 20x + 20
C. f(x) = x3 - 4x2 - (3 - 4i) x + 12 + 16i
D. f(x) = x3 - 8x2 + 21x - 20
Answer: D
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A. 
B. 
C. 312
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A. 
B. 
C. 
D. 
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