Find a polynomial equation with real coefficients that has the given roots. 3 and -9i x^3-?x^2+?x-?=0

Jdross asked Oct 12, 2023

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7 votes

Find a polynomial equation with real coefficients that has the given roots.

3 and -9i

x^3-?x^2+?x-?=0

Jdross asked Oct 12, 2023

2.6k points

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11 votes

Answer:

Explanation:

(x - 3) (x - 9i) (x + 9i) = 0

(x - 3) (x² + 81) = 0

x³ - 3x² + 81x - 243 = 0

Shocks answered Oct 18, 2023

2.9k points

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