Form a polynomial f(x) with real coefficients having the given degree and zeros.Degree 3: zeros: 1 + i and -9
A. f(x) = x3 + 7x2 - 16x + 18
B. f(x) = x3 + x2 - 16x + 18
C. f(x) = x3 + 7x2 + 18x - 16
D. f(x) = x3 -9x2 - 16x - 12
Answer: A
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Multiply and simplify.
? 
A. 
B. 
C. 
D. 