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Which of the following is a polynomial with roots 3, 3i, and 3i ?
A. x^3 + 3x^2 + 9x + 27
B. x^3  3x^2 + 9x  27
C. x^3 + 9x^2 + 9x + 81
D. x^3  9x^2 + 9x  81
 one year ago
 one year ago
Which of the following is a polynomial with roots 3, 3i, and 3i ? A. x^3 + 3x^2 + 9x + 27 B. x^3  3x^2 + 9x  27 C. x^3 + 9x^2 + 9x + 81 D. x^3  9x^2 + 9x  81
 one year ago
 one year ago

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acrossBest ResponseYou've already chosen the best response.0
Expand the following:\[(x+3)(x+3i)(x3i).\]
 one year ago

southrebels2Best ResponseYou've already chosen the best response.0
Well how do you expand with the i?
 one year ago

acrossBest ResponseYou've already chosen the best response.0
Remember that \(i=\sqrt{1}\). So, \(i\cdot i=1\), etc.
 one year ago

southrebels2Best ResponseYou've already chosen the best response.0
Im totally confused..can you just tell me the answer please.
 one year ago
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