Form a polynomial f(x) with real coefficients having the given degree and zeros.Degree: 4; zeros: 4i and -5i

A. f(x) = x4 - 4x3 + 41x2 + 400
B. f(x) = x4 - 5x2 + 400
C. f(x) = x4 + 41x2 + 400
D. f(x) = x4 + 41x2 -5x + 400


Answer: C

Mathematics

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Use front-end rounding to round each number. Then, multiply the rounded numbers to get an estimated answer. Finally, find the exact answer.estimateexact  

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Mathematics