Find all complex zeros of the polynomial function, and write the polynomial in completely factored form.f(x) = x4 + 7x3 + 21x2 + 63x + 108
A. f(x) = (x - 4)(x + 3)(x - 3)(x + 3)
B. f(x) = (x + 4)(x + 3)(x - 3i)(x + 3i)
C. f(x) = (x - i
)(x + i
)(x - 3)(x +3)
D. f(x) = (x - 1)(x - 12)(x - 3i)(x + 3i)
Answer: B
Mathematics
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A. 
+ 
B. 
+ 
C. 
+ 
D. 
+ 
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we generally prefer to use the quadratic formula because it is easier and more efficient to use.
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